WPRT / Westport Fuel Systems Inc. - SEC 보고서, 연례 보고, 기업 사업 설명서

웨스트포트 퓨얼 시스템즈(Westport Fuel Systems Inc.)
US ˙ NasdaqGS ˙ CA9609085076

기본 통계
LEI 549300ZBKJ4TMPXRB502
CIK 1370416
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Westport Fuel Systems Inc.
SEC Filings (Chronological Order)
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June 4, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2026 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

June 4, 2026 EX-99.3

WESTPORT FUEL SYSTEMS INC. 320 Bay Street, 14th Floor Toronto, ON M5H 4A6 www.computershare.com Security Class Holder Account Number Voting Instruction Form ("VIF") - Annual General and Special Meeting to be held on June 30, 2026 NON-REGISTERED (BENE

vifpdf WESTPORT FUEL SYSTEMS INC. 320 Bay Street, 14th Floor Toronto, ON M5H 4A6 www.computershare.com Security Class Holder Account Number Voting Instruction Form ("VIF") - Annual General and Special Meeting to be held on June 30, 2026 NON-REGISTERED (BENEFICIAL) SECURITYHOLDERS 1. We are sending to you the enclosed proxy-related materials that relate to a meeting of the holders of the series or

June 4, 2026 EX-99.4

WESTPORT FUEL SYSTEMS INC. 320 Bay Street, 14th Floor Toronto, ON M5H 4A6 www.computershare.com Security Class Holder Account Number Form of Proxy - Annual General and Special Meeting to be held on June 30, 2026 This Form of Proxy is solicited by and

wptqsedarxproxyxenglish WESTPORT FUEL SYSTEMS INC. 320 Bay Street, 14th Floor Toronto, ON M5H 4A6 www.computershare.com Security Class Holder Account Number Form of Proxy - Annual General and Special Meeting to be held on June 30, 2026 This Form of Proxy is solicited by and on behalf of Management. Notes to proxy 1. Every holder has the right to appoint some other person or company of their choice

June 4, 2026 EX-99.1

WSLEGAL\036683\00179\43531206v3 1 | WESTPORT FUEL SYSTEMS INC. 2026 MANAGEMENT INFORMATION CIRCULAR Table of Contents Letter to Shareholders 2 Notice of Annual General and Special Meeting 4 Section 1: Voting 6 Solicitation of Proxies 6 Communication

a2026wfsmicfinal WSLEGAL\036683\00179\43531206v3 1 | WESTPORT FUEL SYSTEMS INC. 2026 MANAGEMENT INFORMATION CIRCULAR Table of Contents Letter to Shareholders 2 Notice of Annual General and Special Meeting 4 Section 1: Voting 6 Solicitation of Proxies 6 Communication Process for Proxy-Related Materials 8 Voting of Common Shares 9 Currency and Nomenclature in this Management Information Circular 10

June 4, 2026 EX-99.2

EX-99.2

westportnoticexv2

June 4, 2026 EX-99.5

WESTPORT FUEL SYSTEMS INC. Under securities regulations, a reporting issuer must send annually a form to holders to request the Interim Financial Statements and MD&A and/or the Annual Financial Statements and MD&A. If you would like to receive the re

wptqbeniae38797 WESTPORT FUEL SYSTEMS INC. Under securities regulations, a reporting issuer must send annually a form to holders to request the Interim Financial Statements and MD&A and/or the Annual Financial Statements and MD&A. If you would like to receive the report(s) by mail, please make your selection and return to the address as noted or register online at www.computershare.com/mailinglist

May 27, 2026 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Westport Fuel Systems Inc. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Westport Fuel Systems Inc. (Exact name of registrant as specified in its charter) Alberta 001-34152 N/A (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 1691 West 75th Avenue Vancouver, British Columbia, Canada V6P 6P

May 27, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 27, 2026 EX-99.1

Westport Announces Annual General and Special Meeting

EXHIBIT 99.1 Westport Announces Annual General and Special Meeting VANCOUVER, British Columbia, May 27, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or the “Company”) announces that the Company will host its 2026 Annual General and Special Meeting (the “Meeting”) virtually on June 30, 2026, at 10:00 a.m. PT (1:00 p.m. ET). To streamline the virtual meet

May 21, 2026 EX-99.3

Deloitte LLP 410 West Georgia Street Vancouver BC V6B 0S7 Canada Tel : 604-669-4466 Fax : 778-374-0496 www.deloitte.ca May 15, 2026 To: British Columbia Securities Commission Alberta Securities Commission Autorité des marchés financiers Financial and

letterfromsuccessoraudit Deloitte LLP 410 West Georgia Street Vancouver BC V6B 0S7 Canada Tel : 604-669-4466 Fax : 778-374-0496 www.

May 21, 2026 EX-99.1

Westport ™ May 8, 2026 KPMG LLP PO Box 10426 Deloitte LLP 410 W. Georgia Street Vancouver, British Columbia V6B 0S7 777 Dunsmuir Street, 11th floor Vancouver, British Columbia V7Y 1K3 AND TO: British Columbia Securities Commission, as Principal Regul

westportfuelsystemsinc-n Westport ™ May 8, 2026 KPMG LLP PO Box 10426 Deloitte LLP 410 W.

May 21, 2026 EX-99.2

KPMG LLP PO Box 10426 777 Dunsmuir Street Vancouver BC V7Y 1K3 Canada Telephone (604) 691-3000 Fax (604) 691-3031 KPMG LLP, an Ontario limited liability partnership and member firm of the KPMG global organization of independent member firms affiliate

westportfuelsystemsincch KPMG LLP PO Box 10426 777 Dunsmuir Street Vancouver BC V7Y 1K3 Canada Telephone (604) 691-3000 Fax (604) 691-3031 KPMG LLP, an Ontario limited liability partnership and member firm of the KPMG global organization of independent member firms affiliated with KPMG International Limited, a private English company limited by guarantee.

May 21, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 14, 2026 EX-99.1

Westport Reports First Quarter 2026 Financial Results ~Strong demand for the LNG HPDI trucks drives significant Q1 revenue growth for Cespira; Showcasing the high-pressure CNG storage solution at ACT Expo a defining step towards the North American ma

EXHIBIT 99.1 Westport Reports First Quarter 2026 Financial Results ~Strong demand for the LNG HPDI trucks drives significant Q1 revenue growth for Cespira; Showcasing the high-pressure CNG storage solution at ACT Expo a defining step towards the North American market ~ VANCOUVER, British Columbia, May 14, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT) toda

May 14, 2026 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) March 31, 2026 and December 31, 2025

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

May 14, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 14, 2026 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

May 14, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 8, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 8, 2026 EX-99.1

Westport to Issue Q1 2026 Financial Results on May 14, 2026

EXHIBIT 99.1 Westport to Issue Q1 2026 Financial Results on May 14, 2026 VANCOUVER, British Columbia, May 07, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq: WPRT), announces that the Company will release Q1 2026 financial results on Thursday, May 14, 2026, after market close. A conference call and webcast to discuss the financial results and other corporate dev

April 30, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 30, 2026 EX-99.1

Westport to Showcase High‑Pressure CNG Fuel System for North American Heavy‑Duty Fleets at ACT Expo 2026 Westport’s next‑generation compressed natural gas fuel storage system, combined with Cespira's on-engine HPDI™ fuel system, marks a major step to

EXHIBIT 99.1 Westport to Showcase High‑Pressure CNG Fuel System for North American Heavy‑Duty Fleets at ACT Expo 2026 Westport’s next‑generation compressed natural gas fuel storage system, combined with Cespira's on-engine HPDI™ fuel system, marks a major step toward commercializing heavy-duty trucks with diesel performance and efficiency using widely available compressed natural gas VANCOUVER, Br

April 24, 2026 EX-99.1

Westport Reports Fourth Quarter and Full Year 2025 Results 2025 brought enhanced liquidity through completed Light Duty divestiture, the launch of GFI branded production in China and Canada, new HPDI™ OEM interest and global market traction for Cespi

EXHIBIT 99.1 Westport Reports Fourth Quarter and Full Year 2025 Results 2025 brought enhanced liquidity through completed Light Duty divestiture, the launch of GFI branded production in China and Canada, new HPDI™ OEM interest and global market traction for Cespira VANCOUVER, British Columbia, April 23, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport”) (TSX: WPRT / Nasdaq: WPRT) toda

April 24, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 23, 2026 EX-1.2

WSLegal\036683\00100\9616779v3 BY-LAW NO. 1 as amended and re-stated on June 4, 2021 A By-Law relating generally to the transaction of the business and affairs of WESTPORT FUEL SYSTEMS INC. (hereinafter called the "Corporation") CONTENTS ONE - INTERP

exhibit12-wfsxbylawsa01 WSLegal\036683\00100\9616779v3 BY-LAW NO. 1 as amended and re-stated on June 4, 2021 A By-Law relating generally to the transaction of the business and affairs of WESTPORT FUEL SYSTEMS INC. (hereinafter called the "Corporation") CONTENTS ONE - INTERPRETATION TWO - BUSINESS OF THE CORPORATION THREE - BORROWING AND SECURITY FOUR - DIRECTORS FIVE - COMMITTEES SIX - OFFICERS SE

April 23, 2026 EX-12.2

CERTIFICATION

Exhibit 12.2 CERTIFICATION I, Elizabeth Owens, certify that: 1. I have reviewed this annual report on Form 20-F of Westport Fuel Systems Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with r

April 23, 2026 EX-13.2

CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Westport Fuel Systems Inc. (the “Company”) on Form 20-F for the year ended December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Elizabeth Owens, Chief Financial Officer of the Com

April 23, 2026 EX-11.1

1 | P a g e REVIEWED AND ACCEPTED BY THE BOARD OF DIRECTORS ON NOVEMBER 4, 2022 1.0 PURPOSE Canadian securities laws prohibit "insider trading" and impose restrictions on trading in securities while in possession of material non-public information. T

insider-tradingxpolicyxn 1 | P a g e REVIEWED AND ACCEPTED BY THE BOARD OF DIRECTORS ON NOVEMBER 4, 2022 1.

April 23, 2026 EX-4.6

Exhibit 7.5 NOMINATION AGREEMENT THIS AGREEMENT is made as of this 17 day of March, 2016 B E T W E E N : WESTPORT INNOVATIONS INC. (“Westport”) - and - K&M DOUGLAS TRUST (“K&M”) - and - JAMES DOUGLAS AND JEAN DOUGLAS IRREVOCABLE DESCENDANTS’ TRUST (“

westportfuelsystemsinc2 Exhibit 7.5 NOMINATION AGREEMENT THIS AGREEMENT is made as of this 17 day of March, 2016 B E T W E E N : WESTPORT INNOVATIONS INC. (“Westport”) - and - K&M DOUGLAS TRUST (“K&M”) - and - JAMES DOUGLAS AND JEAN DOUGLAS IRREVOCABLE DESCENDANTS’ TRUST (“Descendants’ Trust”) - and - DOUGLAS FAMILY TRUST (“Douglas Trust”) - and - JAMES E. DOUGLAS, III (“James Douglas”, and togeth

April 23, 2026 EX-15.1

Cespira Canada Limited Partnership (previously HPDI Technology Limited Partnership) Consolidated Financial Statements For the year ended December 31, 2025, and for the period from incorporation on February 2, 2024, to December 31, 2024 (Expressed in

cespiracanadalpfinancial Cespira Canada Limited Partnership (previously HPDI Technology Limited Partnership) Consolidated Financial Statements For the year ended December 31, 2025, and for the period from incorporation on February 2, 2024, to December 31, 2024 (Expressed in thousands of Euros) Table of Contents Pages Independent Auditor's Report 1-2 Consolidated Statements of Financial Position 3

April 23, 2026 EX-97.1

Anti-Hedging Policy and Clawback Policy Page 1 of 6 REVIEWED AND ACCEPTED BY THE BOARD OF DIRECTORS ON NOVEMBER 3RD, 2023 ANTI-HEDGING POLICY 1.0 INTRODUCTION AND OBJECTIVE The Board of Directors (the “Board”) of Westport Fuel Systems Inc. (the “Corp

westport-antixhedgingxan Anti-Hedging Policy and Clawback Policy Page 1 of 6 REVIEWED AND ACCEPTED BY THE BOARD OF DIRECTORS ON NOVEMBER 3RD, 2023 ANTI-HEDGING POLICY 1.

April 23, 2026 EX-1.1

6/1/23, 8:19 AM about:blank about:blank 1/1 CORPORATE ACCESS NUMBER: 206475261 BUSINESS CORPORATIONS ACT CERTIFICATE OF AMENDMENT WESTPORT FUEL SYSTEMS INC. AMENDED ITS ARTICLES ON 2023/06/01. 6/1/23, 8:20 AM about:blank about:blank 1/2 Name/Structur

exhibit11-wfsxcompiledar 6/1/23, 8:19 AM about:blank about:blank 1/1 CORPORATE ACCESS NUMBER: 206475261 BUSINESS CORPORATIONS ACT CERTIFICATE OF AMENDMENT WESTPORT FUEL SYSTEMS INC.

April 23, 2026 EX-12.1

CERTIFICATION

Exhibit 12.1 CERTIFICATION I, Daniel Sceli, certify that: 1. I have reviewed this annual report on Form 20-F of Westport Fuel Systems Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with resp

April 23, 2026 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

April 23, 2026 EX-2.2

DESCRIPTION OF SECURITIES

DESCRIPTION OF SECURITIES This exhibit contains a description of the rights of the holders of Common Shares.

April 23, 2026 EX-13.1

CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Westport Fuel Systems Inc. (the “Company”) on Form 20-F for the year ended December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Daniel Sceli, Chief Executive Officer of the Compan

April 23, 2026 EX-15.2

Cespira Sweden AB (previously HPDI Technology AB) Consolidated Financial Statements For the year ended December 31, 2025, and for the period from incorporation on January 22, 2024, to December 31, 2024 (Expressed in thousands of Euros) Table of Conte

cespiraswedenabfinancial Cespira Sweden AB (previously HPDI Technology AB) Consolidated Financial Statements For the year ended December 31, 2025, and for the period from incorporation on January 22, 2024, to December 31, 2024 (Expressed in thousands of Euros) Table of Contents Pages Independent Auditor's Report 1-2 Consolidated Statements of Financial Position 3 Consolidated Statements of Compreh

April 21, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 21, 2026 EX-99.1

Westport to Issue Q4 2025 and Full Year 2025 Financial Results on April 23, 2026

EXHIBIT 99.1 Westport to Issue Q4 2025 and Full Year 2025 Financial Results on April 23, 2026 VANCOUVER, British Columbia, April 20, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that the Company will release 2025 financial results on Thursday, April 23, 2026, after market close. A conference call and webcast to discuss the fi

April 16, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 16, 2026 EX-99.1

Westport Provides Bi-Weekly Management Cease Trade Order Status Update

EXHIBIT 99.1 Westport Provides Bi-Weekly Management Cease Trade Order Status Update VANCOUVER, British Columbia, April 15, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport" or the “Company”) (TSX:WPRT / Nasdaq: WPRT) is providing this bi-weekly management cease trade order status report in accordance with National Policy 12-203 – Management Cease Trade Orders (“NP 12-203“). On April 1

April 2, 2026 EX-99.1

Westport Announces Issuance of Management Cease Trade Order

EXHIBIT 99.1 Westport Announces Issuance of Management Cease Trade Order VANCOUVER, British Columbia, April 01, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport" or the “Company”) (TSX:WPRT / Nasdaq: WPRT) today announced that the British Columbia Securities Commission, the Company’s principal regulator, has issued a temporary management cease trade order (the “MCTO“) against the Comp

April 2, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 1, 2026 EX-99.1

Cespira’s Hydrogen HPDI™ Fuel System Now in On-Road Testing Advancing HPDI Technology for Hydrogen Fuel

EXHIBIT 99.1 Cespira’s Hydrogen HPDI™ Fuel System Now in On-Road Testing Advancing HPDI Technology for Hydrogen Fuel VANCOUVER, British Columbia, April 01, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport" or the “Company”) (TSX:WPRT / Nasdaq:WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, is pleased to announce tha

April 1, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 27, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 27, 2026 EX-99.1

FORM 51-102F3 MATERIAL CHANGE REPORT

Exhibit 99.1 FORM 51-102F3 MATERIAL CHANGE REPORT ITEM 1. Name and Address of Company Westport Fuel Systems Inc. ("Westport" or the "Company") 1691 West 75th Avenue Vancouver, British Columbia V6P 6P2 ITEM 2. Date of Material Change March 19, 2026 ITEM 3. News Release A news release with respect to the material change described herein was issued and disseminated via GlobeNewswire on March 20, 2026

March 20, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 20, 2026 EX-99.1

Westport’s Statement on Cybersecurity Incident

EXHIBIT 99.1 Westport’s Statement on Cybersecurity Incident VANCOUVER, British Columbia, March 20, 2026 (GLOBE NEWSWIRE) - On March 17, 2026, Westport Fuel Systems Inc. (“Westport" or “the Company”) (TSX:WPRT / Nasdaq: WPRT) identified unauthorized access to its network. This incident involved unauthorized access to certain of Westport’s internal IT business applications along with other business

March 13, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2026 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 13, 2026 EX-99.1

Westport to Issue Q4 2025 and Full Year 2025 Financial Results on March 26, 2026

EXHIBIT 99.1 Westport to Issue Q4 2025 and Full Year 2025 Financial Results on March 26, 2026 VANCOUVER, British Columbia, March 12, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that the Company will release 2025 financial results on Thursday, March 26, 2026, after market close. A conference call and webcast to discuss the fi

February 4, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2026 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

February 4, 2026 EX-99.1

Westport Announces $6.5 Million Milestone Payment From Light-Duty Divestiture ~ Previously announced Light-Duty divestiture providing non-dilutive capital that strengthens Westport’s cash position~

EXHIBIT 99.1 Westport Announces $6.5 Million Milestone Payment From Light-Duty Divestiture ~ Previously announced Light-Duty divestiture providing non-dilutive capital that strengthens Westport’s cash position~ VANCOUVER, British Columbia, Feb. 04, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq: WPRT), a supplier of alternative fuel systems and components for th

January 20, 2026 EX-99.1

Westport Announces Start of Production at Two Key High-Pressure Controls and Systems Facilities ~ Global Production Expansion Strengthens Hydrogen and Alternative Fuel System Manufacturing Capacity ~

EXHIBIT 99.1 Westport Announces Start of Production at Two Key High-Pressure Controls and Systems Facilities ~ Global Production Expansion Strengthens Hydrogen and Alternative Fuel System Manufacturing Capacity ~ VANCOUVER, British Columbia, Jan. 19, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq: WPRT), a supplier of alternative fuel systems and components for

January 20, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2026 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

January 14, 2026 EX-99.1

2026 Code Of Conduct Page | 1 Contents Introduction ...................................................................................................................... 3 Section 1: Who is Accountable to the Code ...................................

codeofconduct-2026xexter 2026 Code Of Conduct Page | 1 Contents Introduction ...................................................................................................................... 3 Section 1: Who is Accountable to the Code ......................................................................... 4 1.1 Everyone’s Responsibilities ....................................................

January 14, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2026 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

January 2, 2026 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2026 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2026 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

January 2, 2026 EX-99.1

Westport Announces Board of Directors Update Tony Guglielmin assuming Chair role with retirement of current Chair Dan Hancock; Westport welcoming new Board member Brad Kotush

EXHIBIT 99.1 Westport Announces Board of Directors Update Tony Guglielmin assuming Chair role with retirement of current Chair Dan Hancock; Westport welcoming new Board member Brad Kotush VANCOUVER, British Columbia, Jan. 02, 2026 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq: WPRT), a supplier of alternative fuel systems and components for the global transportation

November 21, 2025 EX-99.2

INVESTMENT AGREEMENT – CAUTIONARY NOTE FOR READERS

Exhibit 99.2 INVESTMENT AGREEMENT – CAUTIONARY NOTE FOR READERS The attached Investment Agreement has been filed with certain securities regulatory authorities in Canada pursuant to National Instrument 51-102 - Continuous Disclosure Obligations, which requires Westport Fuel Systems Inc. ("Westport") to file certain material contracts to which it (or any subsidiary) is a party. Unlike certain other

November 21, 2025 EX-99.3

SHAREHOLDERS AGREEMENT – CAUTIONARY NOTE FOR READERS

Exhibit 99.3 SHAREHOLDERS AGREEMENT – CAUTIONARY NOTE FOR READERS The attached Shareholders Agreement has been filed with certain securities regulatory authorities in Canada pursuant to National Instrument 51-102 – Continuous Disclosure Obligations, which requires Westport Fuel Systems Inc. ("Westport") to file certain material contracts to which it (or any subsidiary) is a party. Unlike certain o

November 21, 2025 EX-99.4

AMENDED AND RESTATED LIMITED PARTNERSHIP AGREEMENT CAUTIONARY NOTE FOR READERS

Exhibit 99.4 AMENDED AND RESTATED LIMITED PARTNERSHIP AGREEMENT CAUTIONARY NOTE FOR READERS The attached Amended and Restated Limited Partnership Agreement has been filed with certain securities regulatory authorities in Canada pursuant to National Instrument 51-102 – Continuous Disclosure Obligations, which requires Westport Fuel Systems Inc. ("Westport") to file certain material contracts to whi

November 21, 2025 EX-99.1

UNANIMOUS SHAREHOLDERS AGREEMENT – CAUTIONARY NOTE FOR READERS

Exhibit 99.1 UNANIMOUS SHAREHOLDERS AGREEMENT – CAUTIONARY NOTE FOR READERS The attached Unanimous Shareholders Agreement has been filed with certain securities regulatory authorities in Canada pursuant to National Instrument 51-102 – Continuous Disclosure Obligations, which requires Westport Fuel Systems Inc. ("Westport") to file certain material contracts to which it (or any subsidiary) is a par

November 21, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

November 12, 2025 EX-99.1

Westport Reports Third Quarter 2025 Financial Results ~Company strengthens financial position with improved margins, enhanced liquidity, and continued progress on transformation initiatives~

EXHIBIT 99.1 Westport Reports Third Quarter 2025 Financial Results ~Company strengthens financial position with improved margins, enhanced liquidity, and continued progress on transformation initiatives~ VANCOUVER, British Columbia, Nov. 10, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), a supplier of alternative fuel systems and components for the global

November 12, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

November 10, 2025 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

November 10, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

November 10, 2025 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) September 30, 2025 and December 31, 2024

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

November 6, 2025 EX-99.1

Westport Reveals CNG Solution for Natural Gas HPDI™ Engines and North America’s Clean Transportation Future Innovative and proprietary solution aims to set a new standard for high-efficiency performance while delivering superior economics and flexibi

EXHIBIT 99.1 Westport Reveals CNG Solution for Natural Gas HPDI™ Engines and North America’s Clean Transportation Future Innovative and proprietary solution aims to set a new standard for high-efficiency performance while delivering superior economics and flexibility to operate on natural gas and renewable natural gas (“RNG”) as well as blends of natural gas, RNG and hydrogen VANCOUVER, British Co

November 6, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

October 22, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2025 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

October 22, 2025 EX-99.1

Westport to Issue Q3 2025 Financial Results on November 10, 2025

EXHIBIT 99.1 Westport to Issue Q3 2025 Financial Results on November 10, 2025 VANCOUVER, British Columbia, Oct. 22, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that the Company will release Q3 2025 financial results on Monday, November 10, 2025, after market close. A conference call and webcast to discuss the financial resul

October 14, 2025 EX-99.1

Cespira Signs Agreement to Supply Components for a Customer Truck Trial Agreement with Leading OEM to Trial HPDI Key Components on Customer Trucks Marks an Important Step Forward to Potential Full Commercialization with a Second OEM

EXHIBIT 99.1 Cespira Signs Agreement to Supply Components for a Customer Truck Trial Agreement with Leading OEM to Trial HPDI Key Components on Customer Trucks Marks an Important Step Forward to Potential Full Commercialization with a Second OEM VANCOUVER, British Columbia, Oct. 14, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq: WPRT), a supplier of alternative

October 14, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2025 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

October 1, 2025 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2025 Commission File Number: 001-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (

October 1, 2025 EX-99.1

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) June 30, 2025 and December 31, 2024

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

September 16, 2025 144

144

144 0001901405 XXXXXXXX LIVE 0001370416 WESTPORT FUEL SYSTEMS INC. 001-34152 1691 WEST 75TH AVENUE VANCOUVER A1 V6P6G2 6047182000 Larkin William E Officer Common Shares Morgan Stanley 600 3rd Avenue SW Suite 1500 Calgary A0 T2P0G5 11530 27326.10 17351005 09/16/2025 NASDAQ Common Shares Merrill EDGE PO Box 40486 Jacksonville FL 32203 23640 56026.80 17351005 09/16/2025 NASDAQ Common Shares 03/27/202

August 27, 2025 EX-99.1

Westport Announces the Resignation of Chief Financial Officer William Larkin and Appoints Elizabeth Owens as Successor

EXHIBIT 99.1 Westport Announces the Resignation of Chief Financial Officer William Larkin and Appoints Elizabeth Owens as Successor VANCOUVER, British Columbia, Aug. 26, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport” or the “Company”) (TSX: WPRT / Nasdaq: WPRT) today announced the resignation of its Chief Financial Officer (CFO), William Larkin and the appointment of Elizabeth Owen

August 27, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 20, 2025 LETTER

LETTER

August 19, 2025 William Larkin Chief Financial Officer Westport Fuel Systems Inc. 1691 West 75th Avenue Vancouver, British Columbia, V6P 6P2 Re: Westport Fuel Systems Inc. Registration Statement on Form F-3 Filed August 15, 2025 File No. 333-289669 Dear William Larkin: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461

August 20, 2025 CORRESP

WESTPORT FUEL SYSTEMS INC. 1691 West 75th Avenue Vancouver, British Columbia, V6P 6P2

WESTPORT FUEL SYSTEMS INC. 1691 West 75th Avenue Vancouver, British Columbia, V6P 6P2 VIA EDGAR August 20, 2025 United States Securities and Exchange Commission Division of Corporation Finance Office of Technology 100 F Street, N.E. Washington, D.C. 20549 Attention: Lauren Pierce Jan Woo Re: Westport Fuel Systems Inc. Registration Statement on Form F-3 File No. 333-289669 To the addressees set for

August 18, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 18, 2025 EX-99.1

Westport Files Preliminary Short Form Base Shelf Prospectus To Replace Expired Base Shelf Prospectus

EXHIBIT 99.1 Westport Files Preliminary Short Form Base Shelf Prospectus To Replace Expired Base Shelf Prospectus VANCOUVER, British Columbia, Aug. 15, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. ("Westport") (TSX: WPRT / Nasdaq: WPRT) announces it has filed a preliminary short form base shelf prospectus (once filed in final form and received by the relevant Canadian securities regulatory a

August 15, 2025 EX-FILING FEES

Calculation of Filing Fee Table Form F-3 (Form Type) Westport Fuel Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

EXHIBIT 107 Calculation of Filing Fee Table Form F-3 (Form Type) Westport Fuel Systems, Inc.

August 15, 2025 EX-3.2

WSLegal\036683\00100\9616779v3 BY-LAW NO. 1 as amended and re-stated on June 4, 2021 A By-Law relating generally to the transaction of the business and affairs of WESTPORT FUEL SYSTEMS INC. (hereinafter called the "Corporation") CONTENTS ONE - INTERP

exhibit32-wfsxbylaws WSLegal\036683\00100\9616779v3 BY-LAW NO. 1 as amended and re-stated on June 4, 2021 A By-Law relating generally to the transaction of the business and affairs of WESTPORT FUEL SYSTEMS INC. (hereinafter called the "Corporation") CONTENTS ONE - INTERPRETATION TWO - BUSINESS OF THE CORPORATION THREE - BORROWING AND SECURITY FOUR - DIRECTORS FIVE - COMMITTEES SIX - OFFICERS SEVEN

August 15, 2025 F-3

As filed with the Securities and Exchange Commission on August 15, 2025

As filed with the Securities and Exchange Commission on August 15, 2025 Registration No.

August 15, 2025 EX-3.1

6/1/23, 8:19 AM about:blank about:blank 1/1 CORPORATE ACCESS NUMBER: 206475261 BUSINESS CORPORATIONS ACT CERTIFICATE OF AMENDMENT WESTPORT FUEL SYSTEMS INC. AMENDED ITS ARTICLES ON 2023/06/01. 6/1/23, 8:20 AM about:blank about:blank 1/2 Name/Structur

exhibit31-wfsxcompiledar 6/1/23, 8:19 AM about:blank about:blank 1/1 CORPORATE ACCESS NUMBER: 206475261 BUSINESS CORPORATIONS ACT CERTIFICATE OF AMENDMENT WESTPORT FUEL SYSTEMS INC.

August 12, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 12, 2025 EX-99.1

Westport Reports Second Quarter 2025 Financial Results

EXHIBIT 99.1 Westport Reports Second Quarter 2025 Financial Results VANCOUVER, British Columbia, Aug. 11, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), a supplier of alternative fuel systems and components for the global transportation industry, reported financial results for the second quarter ended June 30, 2025, and provided an update on operations. A

August 11, 2025 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

August 11, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 11, 2025 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) June 30, 2025 and December 31, 2024

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

July 29, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

July 29, 2025 EX-99.1

Westport Announces Closing of Previously Announced Light-Duty Segment Divestiture Company sharpens strategic focus on providing affordable, fuel-agnostic solutions that drive real climate benefits and future growth for the Company

EXHIBIT 99.1 Westport Announces Closing of Previously Announced Light-Duty Segment Divestiture Company sharpens strategic focus on providing affordable, fuel-agnostic solutions that drive real climate benefits and future growth for the Company VANCOUVER, British Columbia, July 29, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport” or the “Company”) (TSX:WPRT / Nasdaq:WPRT), today annou

June 26, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

June 26, 2025 EX-99.1

Westport to Issue Q2 2025 Financial Results on August 11, 2025 and Provides an Update on the Divestment of the Light-Duty Segment

EXHIBIT 99.1 Westport to Issue Q2 2025 Financial Results on August 11, 2025 and Provides an Update on the Divestment of the Light-Duty Segment VANCOUVER, British Columbia, June 26, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that the Company will release Q2 2025 financial results on Monday, August 11, 2025, after market clos

May 27, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Westport Fuel Systems Inc. (Exact name of registrant as specified in its charter) Alberta 001-34152 N/A (State or other jurisdiction of inco

conflictminerals2024disc UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 16, 2025 EX-99.1

Westport Publishes Annual General and Special Meeting Results

EXHIBIT 99.1 Westport Publishes Annual General and Special Meeting Results VANCOUVER, British Columbia, May 15, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport" or the "Company") (TSX:WPRT / Nasdaq:WPRT), today held its Annual General and Special Meeting of Shareholders (the "Meeting") in a virtual format. Shareholders approved all resolutions presented at the meeting including the e

May 16, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 13, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 13, 2025 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) March 31, 2025 and December 31, 2024

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

May 13, 2025 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

May 13, 2025 EX-99.1

Westport Fuel Systems Reports First Quarter 2025 Financial Results

EXHIBIT 99.1 Westport Fuel Systems Reports First Quarter 2025 Financial Results VANCOUVER, British Columbia, May 13, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT) reported financial results for the first quarter ended March 31, 2025, and provided an update on operations. All figures are in U.S. dollars unless otherwise stated. “We continue to make signifi

May 13, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 1, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 1, 2025 EX-99.1

WSLEGAL\036683\00174\40922633v1 LOCK-UP AGREEMENT THIS AGREEMENT is made and entered into as of the 29th day of April, 2025 among Westport Fuel Systems Inc., a corporation formed under the laws of the Province of Alberta (the "Company") and the direc

WSLEGAL\036683\00174\40922633v1 LOCK-UP AGREEMENT THIS AGREEMENT is made and entered into as of the 29th day of April, 2025 among Westport Fuel Systems Inc.

May 1, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

May 1, 2025 EX-99.1

Westport Announces Lock-Up Agreements in Support of the Light-Duty Divestment Transaction

EXHIBIT 99.1 Westport Announces Lock-Up Agreements in Support of the Light-Duty Divestment Transaction VANCOUVER, British Columbia, April 30, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport" or the "Company") (TSX:WPRT / Nasdaq:WPRT), has entered into lock-up agreements with certain of its shareholders, executives and board members representing an aggregate of approximately 2.0 milli

April 18, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 18, 2025 EX-99.1

Westport Announces Annual General and Special Meeting and Timing of Q1 2025 Financial Results

EXHIBIT 99.1 Westport Announces Annual General and Special Meeting and Timing of Q1 2025 Financial Results VANCOUVER, British Columbia, April 17, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or the “Company”) announces that the Company will release Q1 2025 financial results on Tuesday, May 13, 2025, after market close. A conference call and webcast to d

April 10, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 10, 2025 EX-99.1

SHARE PURCHASE AGREEMENT – CAUTIONARY NOTE FOR READERS The attached Share Purchase Agreement has been filed with certain securities regulatory authorities in Canada pursuant to National Instrument 51-102 – Continuous Disclosure Obligations, which req

redactedsharepurchaseagr SHARE PURCHASE AGREEMENT – CAUTIONARY NOTE FOR READERS The attached Share Purchase Agreement has been filed with certain securities regulatory authorities in Canada pursuant to National Instrument 51-102 – Continuous Disclosure Obligations, which requires Westport Fuel Systems Inc.

April 4, 2025 EX-99.2

WESTPORT FUEL SYSTEMS INC. Security Class Holder Account Number Form of Proxy - Annual General and Special Meeting to be held on May 15, 2025 This Form of Proxy is solicited by and on behalf of Management. Notes to proxy 1. Every holder has the right

WESTPORT FUEL SYSTEMS INC. Security Class Holder Account Number Form of Proxy - Annual General and Special Meeting to be held on May 15, 2025 This Form of Proxy is solicited by and on behalf of Management. Notes to proxy 1. Every holder has the right to appoint some other person or company of their choice, who need not be a holder, to attend and act on their behalf at the meeting or any adjournmen

April 4, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 4, 2025 EX-99.1

1 | WESTPORT FUEL SYSTEMS INC. 2025 MANAGEMENT INFORMATION CIRCULAR Table of Contents Notice of Annual General and Special Meeting 2 Section 1: Voting 4 Solicitation of Proxies 4 Communication Process for Proxy-Related Materials 5 Voting of Common Sh

1 | WESTPORT FUEL SYSTEMS INC. 2025 MANAGEMENT INFORMATION CIRCULAR Table of Contents Notice of Annual General and Special Meeting 2 Section 1: Voting 4 Solicitation of Proxies 4 Communication Process for Proxy-Related Materials 5 Voting of Common Shares 5 Currency and Nomenclature in this Management Information Circular 7 Matters to be Acted Upon 7 Interest of Certain Persons or Matters to be Act

March 31, 2025 EX-99.2

Report of Independent Registered Public Accounting Firm

Consolidated Financial Statements (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

March 31, 2025 EX-99.6

CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 99.6 CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Westport Fuel Systems Inc. (the “Company”) on Form 40-F for the year ended December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Daniel Sceli, Chief Executive Officer of the Compan

March 31, 2025 EX-99.3

Three Months Ended December 31, 2024 2023 (in millions of U.S. dollars, except for per share amounts and shares outstanding) Revenue $ 75.1 $ 87.2 Gross profit $ 14.3 $ 8.0 Gross margin1 19 % 9 % Loss from operations $ (8.0) $ (14.1) Income (loss) fr

BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

March 31, 2025 EX-99.8

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm The Board of Directors Westport Fuel Systems Inc.

March 31, 2025 EX-99.1

High (C$)

Effective Date March 31, 2025 Table of Contents Reference and Forward-Looking Information 1 Corporate Structure 1 About Westport Fuel Systems 2 Business Overview 2 Business Segments 3 Production and Operations 4 Our Brands 4 Business Strategy: Now to Next, Built for the Long-Term 5 Our Business History - Three Year Look back 7 Human Resources and Related Policies 11 Environmental and Social Polici

March 31, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 31, 2025 EX-99.1

Westport Reports Fourth Quarter and Full Year 2024 Results Improvement in key metrics drove net cash provided by operating activities of $7.2 million, which is a $20.4 million improvement over 2023

EXHIBIT 99.1 Westport Reports Fourth Quarter and Full Year 2024 Results Improvement in key metrics drove net cash provided by operating activities of $7.2 million, which is a $20.4 million improvement over 2023 VANCOUVER, British Columbia, March 31, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport”) (TSX: WPRT / Nasdaq: WPRT) today reported financial results for the fourth quarter and

March 31, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 31, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 31, 2025 EX-99.7

CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 99.7 CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Westport Fuel Systems Inc. (the “Company”) on Form 40-F for the year ended December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, William E. Larkin, Chief Financial Officer of the C

March 31, 2025 EX-99.5

CERTIFICATION

Exhibit 99.5 CERTIFICATION I, William E. Larkin, certify that: 1. I have reviewed this annual report on Form 40-F of Westport Fuel Systems Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with

March 31, 2025 EX-99.1

2024 A N N U A L R E P O R T 2 3 TABLE OF CONTENTS About Westport Fuel Systems ................................................4 Letter to Shareholders ................................................................6 At a Glance ....................

2024 A N N U A L R E P O R T 2 3 TABLE OF CONTENTS About Westport Fuel Systems ................................................4 Letter to Shareholders ................................................................6 At a Glance ...................................................................................... 10 Financial Highlights ...........................................................

March 31, 2025 40-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 40-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 40-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13(a) OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 Commission file number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Exact Name of Registrant as Spec

March 31, 2025 EX-99.1

Westport Announces Agreement to Divest the Light-Duty Segment for $73.1 Million The Proposed Transaction Sharpens the Company’s Focus on Providing Solutions for Hard-to-Decarbonize Mobility and Industrial Applications, Strengthens its Balance Sheet,

EXHIBIT 99.1 Westport Announces Agreement to Divest the Light-Duty Segment for $73.1 Million The Proposed Transaction Sharpens the Company’s Focus on Providing Solutions for Hard-to-Decarbonize Mobility and Industrial Applications, Strengthens its Balance Sheet, and Provides Capital to Re-Invest in Near-Term Growth VANCOUVER, British Columbia, March 31, 2025 (GLOBE NEWSWIRE) - Westport Fuel System

March 31, 2025 EX-99.4

CERTIFICATION

Exhibit 99.4 CERTIFICATION I, Daniel Sceli, certify that: 1. I have reviewed this annual report on Form 40-F of Westport Fuel Systems Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with resp

March 19, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 19, 2025 EX-99.1

Westport to Issue Q4 and Full Year 2024 Financial Results on March 31, 2025

EXHIBIT 99.1 Westport to Issue Q4 and Full Year 2024 Financial Results on March 31, 2025 VANCOUVER, British Columbia, March 19, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that the Company will release 2024 financial results on Monday, March 31, 2025, before market open. A conference call and webcast to discuss the financial

February 11, 2025 EX-99

WPRT / Westport Fuel Systems Inc. / BAIRD ROBERT W & CO INC /WI/ - JOINT FILING AGREEMENT

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January 22, 2025 EX-99.1

Cespira Appoints Carlos Gonzalez as President and CEO

EXHIBIT 99.1 Cespira Appoints Carlos Gonzalez as President and CEO VANCOUVER, British Columbia, Jan. 22, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), is pleased to announce that Cespira, the Company’s High Pressure Direct Injection (HPDI) joint venture with Volvo Group, has appointed Carlos Gonzalez as President and CEO, effective April 1, 2025. Carlos

January 22, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

January 13, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

January 13, 2025 EX-99.1

Westport Announces Director Retirement

EXHIBIT 99.1 Westport Announces Director Retirement VANCOUVER, British Columbia, Jan. 13, 2025 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), announces that Brenda Eprile has retired from Westport’s Board of Directors (the “Board”), effective January 6, 2025. The Board is currently evaluating alternatives with respect to the appointment of an independent direc

November 13, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

November 13, 2024 EX-99.1

Westport Reports Third Quarter 2024 Financial Results Transition of Heavy-Duty OEM assets into Cespira, where they generated revenue of $16.2 million outweighs quarter-over-quarter revenue decline of $11.2 million

EXHIBIT 99.1 Westport Reports Third Quarter 2024 Financial Results Transition of Heavy-Duty OEM assets into Cespira, where they generated revenue of $16.2 million outweighs quarter-over-quarter revenue decline of $11.2 million VANCOUVER, British Columbia, Nov. 12, 2024 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), a leading supplier of advanced alternative fu

November 12, 2024 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) September 30, 2024 and December 31, 2023

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

November 12, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

November 12, 2024 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

October 23, 2024 EX-99.1

Westport to Issue Q3 2024 Financial Results on November 12, 2024

EXHIBIT 99.1 Westport to Issue Q3 2024 Financial Results on November 12, 2024 VANCOUVER, British Columbia, Oct. 23, 2024 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that the Company will release financial results for the third quarter of 2024 on Tuesday, November 12, 2024, after market close. A conference call and webcast to disc

October 23, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

September 13, 2024 EX-99.1

WESTPORT FUEL SYSTEMS INC. EQUITY DISTRIBUTION AGREEMENT

Exhibit 99.1 WESTPORT FUEL SYSTEMS INC. EQUITY DISTRIBUTION AGREEMENT September 13, 2024 Craig-Hallum Capital Group LLC 222 South Ninth Street, Suite 350 Minneapolis, Minnesota 55402 United States H.C. Wainwright & Co., LLC 430 Park Avenue New York, New York 10022 United States Cormark Securities Inc. Royal Bank Plaza, North Tower 200 Bay Street, Suite 1800 Toronto, Ontario Canada M5J 2J2 Attentio

September 13, 2024 EX-99.2

Westport Announces At-the-Market Equity Offering Program

EXHIBIT 99.2 Westport Announces At-the-Market Equity Offering Program VANCOUVER, British Columbia, Sept. 13, 2024 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that it has established an at-the-market equity offering program (the “ATM Program”) that allows the Company to issue and sell up to US$35,000,000 (or its Canadian dollar eq

September 13, 2024 SUPPL

PROSPECTUS SUPPLEMENT (to the short form base shelf prospectus dated May 18, 2023)

Filed pursuant to General Instruction II.L. of Form F-10 File No. 333-271271 No securities regulatory authority has expressed an opinion about these securities and it is an offence to claim otherwise. This prospectus supplement (the "Prospectus Supplement"), together with the accompanying short form base shelf prospectus dated May 18, 2023 to which it relates, each as amended or supplemented (coll

September 13, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2024 Commission File Number: 001-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (

August 13, 2024 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) June 30, 2024 and December 31, 2023

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

August 13, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 13, 2024 EX-99.1

Westport Reports Second Quarter 2024 Financial Results and Revises Segment Reporting

EXHIBIT 99.1 Westport Reports Second Quarter 2024 Financial Results and Revises Segment Reporting VANCOUVER, British Columbia, Aug. 13, 2024 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, reported financial results for the second quarter ended June 30

August 13, 2024 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

August 13, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

July 26, 2024 EX-99.1

Westport to Issue Q2 2024 Financial Results on August 13, 2024

EXHIBIT 99.1 Westport to Issue Q2 2024 Financial Results on August 13, 2024 VANCOUVER, British Columbia, July 25, 2024 (GLOBE NEWSWIRE) - Westport Fuel Systems Inc. (TSX: WPRT / Nasdaq: WPRT) (“Westport” or “The Company”) announces that the Company will release financial results for the second quarter of 2024 on Tuesday, August 13, 2024, after market close. A conference call and webcast to discuss

July 26, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

July 5, 2024 EX-99.1

Volvo Group and Westport Celebrate Transformative Partnership Event Highlights Joint Venture’s Role in Global Adoption of HPDI™ Fuel System, Advancing Commercial Transportation to Smarter, Cleaner Power with IC Engines

EXHIBIT 99.1 Volvo Group and Westport Celebrate Transformative Partnership Event Highlights Joint Venture’s Role in Global Adoption of HPDI™ Fuel System, Advancing Commercial Transportation to Smarter, Cleaner Power with IC Engines VANCOUVER, British Columbia, July 05, 2024 (GLOBE NEWSWIRE) - Volvo Group (“Volvo”) and Westport Fuel Systems Inc. ("Westport" or the “Company”) (TSX: WPRT / Nasdaq: WP

July 5, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

June 26, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

June 26, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport Fuel Systems Publishes 2023 ESG Report VANCOUVER, BC (June 25, 2024) – Westport Fuel Systems Inc.

June 26, 2024 EX-99.1

Westport Fuel Systems Publishes 2023 ESG Report

Exhibit 99.1 Westport Fuel Systems Publishes 2023 ESG Report VANCOUVER, BC, June 25, 2024 /CNW/ - Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, is pleased to publish its 2023 Environmental, Social and Governance ("ESG") report (the "2023 ESG Report")

June 17, 2024 EX-7.2

LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS UNDER SECTIONS 13(D) AND 13(G) OF THE SECURITIES EXCHANGE ACT OF 1934

EX-7.2 Exhibit 7.2 LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS UNDER SECTIONS 13(D) AND 13(G) OF THE SECURITIES EXCHANGE ACT OF 1934 The undersigned hereby make, constitute and appoint each of Eileen Wheatman and Kevin Douglas, acting either individually or together, as each of the undersigned’s true and lawful attorneys-in-fact, with full power and authority as hereinafter described on be

June 17, 2024 EX-7.1

AGREEMENT REGARDING JOINT FILING OF STATEMENT ON SCHEDULE 13D

EX-7.1 Exhibit 7.1 AGREEMENT REGARDING JOINT FILING OF STATEMENT ON SCHEDULE 13D Each of the undersigned hereby acknowledges and agrees, pursuant to the provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, that the Schedule 13D to which this Agreement is attached as an Exhibit, and any amendments thereto, with respect to the beneficial ownership of the

June 17, 2024 SC 13D/A

WPRT / Westport Fuel Systems Inc. / DOUGLAS KEVIN - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9) Westport Fuel Systems Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 960908507 (CUSIP Number) Ryan J. York Accretive Legal, PLLC 34522 N Scottsdale Rd., STE 120-113 Scottsdale, AZ 85266 (425) 786-9256 (Name, Address and Telepho

June 14, 2024 EX-99.1

EX-99.1

June 14, 2024 EX-99.1

Executive Compensation (Advisory Vote)

Exhibit 99.1 Westport Publishes Annual General Meeting Results VANCOUVER, BC, June 13, 2024 /CNW/ - Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (Nasdaq: WPRT) today held its Annual General Meeting of Shareholders (the "Meeting") in a virtual format. Shareholders approved all resolutions presented at the meeting including the election of all nominated directors, the appoint

June 14, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

June 4, 2024 EX-99.1

Westport and Volvo Group Announce Closing of the Joint Venture Working Together to Accelerate the Commercialization and Global Adoption of Westport's HPDI™ Fuel System Technology for Long-Haul and Off-Road Applications

Exhibit 99.1 Westport and Volvo Group Announce Closing of the Joint Venture Working Together to Accelerate the Commercialization and Global Adoption of Westport's HPDI™ Fuel System Technology for Long-Haul and Off-Road Applications VANCOUVER, BC, June 3, 2024 /CNW/ - Volvo Group ("Volvo") and Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (Nasdaq: WPRT) today announced the cl

June 4, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addre

June 4, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport and Volvo Group Announce Closing of the Joint Venture Working Together to Accelerate the Commercialization and Global Adoption of Westport’s HPDI™ Fuel System Technology for Long-Haul and Off-Road Applications VANCOUVER - (June 3, 2024) – Volvo Group (“Volvo”) and Westport Fuel Systems Inc.

May 22, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Westport Fuel Systems Inc. (Exact name of registrant as specified in its charter) Alberta 001-34152 N/A (State or other jurisdiction of inco

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Westport Fuel Systems Inc. (Exact name of registrant as specified in its charter) Alberta 001-34152 N/A (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 1691 West 75th Avenue Vancouver, British Columbia, Canada V6P 6P

May 9, 2024 EX-99.1

Westport Fuel Systems Reports First Quarter 2024 Financial Results

Exhibit 99.1 Westport Fuel Systems Reports First Quarter 2024 Financial Results VANCOUVER, BC, May 8, 2024 /CNW/ - Westport Fuel Systems Inc. ("Westport") (TSX: WPRT) (Nasdaq: WPRT) reported financial results for the first quarter ended March 31, 2024, and provided an update on operations. All figures are in U.S. dollars unless otherwise stated. "In my first 100 days, I have worked to determine wh

May 9, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 9, 2024 EX-99.1

EX-99.1

WESTPORT FUEL SYSTEMS INC. » 1 Westport Fuel Systems Reports First Quarter 2024 Financial Results May 8, 2024 VANCOUVER, BC - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT) reported financial results for the first quarter ended March 31, 2024, and provided an update on operations. All figures are in U.S. dollars unless otherwise stated. “In my first 100 days, I have worked to det

May 9, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 9, 2024 EX-99.1

Notice of Annual General Meeting of Shareholders To be held on June 13, 2024 at 10:00 a.m. (Pacific Time) Items of Business Board's Voting Recommendation 1 Election of directors FOR ALL By Internet Visit 24/7 proxyvote.com By Mailing Your Proxy Card

Table of Contents Letter to Shareholders 1 Notice of Annual General Meeting 2 Section 1: Voting 4 Solicitation of Proxies 6 Communication Process for Proxy-Related Materials 6 Voting of Common Shares 7 Currency and Nomenclature in this Management Information Circular 7 Matters to be Acted Upon 9 Interest of Certain Persons or Matters to be Acted Upon 9 Section 2: Board of Directors 10 Nominees for

May 9, 2024 EX-99.2

WESTPORT FUEL SYSTEMS INC. Security Class Holder Account Number Form of Proxy - Annual General Meeting to be held on June 13, 2024 This Form of Proxy is solicited by and on behalf of Management. Notes to proxy 1. Every holder has the right to appoint

WESTPORT FUEL SYSTEMS INC. Security Class Holder Account Number Form of Proxy - Annual General Meeting to be held on June 13, 2024 This Form of Proxy is solicited by and on behalf of Management. Notes to proxy 1. Every holder has the right to appoint some other person or company of their choice, who need not be a holder, to attend and act on their behalf at the meeting or any adjournment or postpo

May 8, 2024 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) March 31, 2024 and December 31, 2023

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

May 8, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-34152

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addres

May 8, 2024 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

April 23, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 23, 2024 EX-99.1

Westport to Issue Q1 2024 Financial Results on May 8, 2024

Exhibit 99.1 Westport to Issue Q1 2024 Financial Results on May 8, 2024 VANCOUVER, BC, April 23, 2024 /CNW/ - Westport Fuel Systems Inc. (TSX: WPRT) (Nasdaq: WPRT) ("Westport" or "The Company") announces that the Company will release financial results for the first quarter of 2024 on Wednesday, May 8, 2024, after market close. A conference call and webcast to discuss the financial results and othe

April 23, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport to Issue Q1 2024 Financial Results on May 8, 2024 April 23, 2024 VANCOUVER - Westport Fuel Systems Inc.

April 11, 2024 EX-99.1

H2 HPDITM, our cost-effective, high-performance solution to support climate neutrality in the heavy-duty mobility sector will be able to attain ZEV classification for many truck configurations

Exhibit 99.1 Westport's Alternative Fuel Technologies Can Play an Important Role in Meeting the Strengthened European Decarbonization Targets for Heavy-Duty Vehicles H2 HPDITM, our cost-effective, high-performance solution to support climate neutrality in the heavy-duty mobility sector will be able to attain ZEV classification for many truck configurations VANCOUVER, BC, April 11, 2024 /CNW/ - Wes

April 11, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

April 11, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport’s Alternative Fuel Technologies Can Play an Important Role in Meeting the Strengthened European Decarbonization Targets for Heavy-Duty Vehicles H 2 HPDI TM , our cost-effective, high-performance solution to support climate neutrality in the heavy-duty mobility sector will be able to attain ZEV classification for many truck configurations VANCOUVER, BC (April 11, 2024) – Westport Fuel Systems Inc.

March 26, 2024 EX-99.1

Over / (Under)

Exhibit 99.1 Westport Reports Fourth Quarter and Full Year 2023 Results VANCOUVER, BC, March 25, 2024 /CNW/ - Westport Fuel Systems Inc. ("Westport") (TSX: WPRT) (Nasdaq: WPRT) today reported financial results for the fourth quarter and year ended December 31, 2023, and provided an update on operations. All figures are in U.S. dollars unless otherwise stated. "I am privileged to report that despit

March 26, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 26, 2024 EX-99.2

Report of Independent Registered Public Accounting Firm

Consolidated Financial Statements (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

March 26, 2024 EX-99.1

Letter to Shareholders

Letter to Shareholders I am honoured to address you as Westport’s new CEO and am inspired by our dedication to create a more sustainable world through innovative technology.

March 26, 2024 EX-99.3

Three Months Ended December 31, 2023 2022 (expressed in millions of U.S. dollars, except for per share amounts and shares outstanding) Revenue $ 87.2 $ 78.0 Gross margin1 $ 8.0 $ 4.6 Gross margin %1 9 % 6 % Loss from operations $ (14.1) $ (17.2) Inco

BASIS OF PRESENTATION This Management’s Discussion and Analysis ("MD&A") for Westport Fuel Systems Inc.

March 26, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 26, 2024 EX-99.1

EX-99.1

WESTPORT FUEL SYSTEMS INC. | 1 Westport Reports Fourth Quarter and Full Year 2023 Results March 25, 2024 VANCOUVER, BC - Westport Fuel Systems Inc. (“Westport”) (TSX: WPRT / Nasdaq: WPRT) today reported financial results for the fourth quarter and year ended December 31, 2023, and provided an update on operations. All figures are in U.S. dollars unless otherwise stated. “I am privileged to report

March 25, 2024 EX-99.7

CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 99.7 CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Westport Fuel Systems Inc. (the “Company”) on Form 40-F for the year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, William E. Larkin, Chief Financial Officer of the C

March 25, 2024 EX-99.2

Report of Independent Registered Public Accounting Firm

Consolidated Financial Statements (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

March 25, 2024 EX-99.4

CERTIFICATION

Exhibit 99.4 CERTIFICATION I, Daniel Sceli, certify that: 1. I have reviewed this annual report on Form 40-F of Westport Fuel Systems Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with resp

March 25, 2024 EX-99.1

Table of Contents

Effective date March 25, 2024 Table of Contents Reference and Forward-Looking Information 1 Corporate Structure 2 About Westport Fuel Systems 3 Market Overview 5 Overview of the Market 5 Market Dynamics 9 Near Term Industry Challenges 9 Our Business History and Strategy 12 Three Year Lookback 12 Strategy 15 Operating Business Segments 16 Long-Term Investments 17 Innovation, Research and Developmen

March 25, 2024 40-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 40-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 40-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13(a) OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 Commission file number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Exact Name of Registrant as Spec

March 25, 2024 EX-99.5

CERTIFICATION

Exhibit 99.5 CERTIFICATION I, William E. Larkin, certify that: 1. I have reviewed this annual report on Form 40-F of Westport Fuel Systems Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with

March 25, 2024 EX-99.8

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm The Board of Directors of Westport Fuel Systems Inc.

March 25, 2024 EX-99.3

Three Months Ended December 31, 2023 2022 (expressed in millions of U.S. dollars, except for per share amounts and shares outstanding) Revenue $ 87.2 $ 78.0 Gross margin1 $ 8.0 $ 4.6 Gross margin %1 9 % 6 % Loss from operations $ (14.1) $ (17.2) Inco

BASIS OF PRESENTATION This Management’s Discussion and Analysis ("MD&A") for Westport Fuel Systems Inc.

March 25, 2024 EX-99.6

CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 99.6 CERTIFICATION PURSUANT TO 18 U.S.C. §1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Westport Fuel Systems Inc. (the “Company”) on Form 40-F for the year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Daniel Sceli, Chief Executive Officer of the Compan

March 25, 2024 EX-97.1

Page 1 of 6 REVIEWED AND ACCEPTED BY THE BOARD OF DIRECTORS ON NOVEMBER 3RD, 2023 ANTI-HEDGING POLICY 1.0 INTRODUCTION AND OBJECTIVE The Board of Directors (the “Board”) of Westport Fuel Systems Inc. (the “Corporation”) believe that it is inappropria

Page 1 of 6 REVIEWED AND ACCEPTED BY THE BOARD OF DIRECTORS ON NOVEMBER 3RD, 2023 ANTI-HEDGING POLICY 1.

March 13, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 13, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport Reschedules Q4 and 2023 Audited Financial Results Release to Post-Market on March 25, 2024 March 11, 2024 VANCOUVER - Westport Fuel Systems Inc.

March 13, 2024 EX-99.1

Westport Reschedules Q4 and 2023 Audited Financial Results Release to Post-Market on March 25, 2024

Exhibit 99.1 Westport Reschedules Q4 and 2023 Audited Financial Results Release to Post-Market on March 25, 2024 VANCOUVER, BC, March 11, 2024 /CNW/ - Westport Fuel Systems Inc. (TSX: WPRT) (NASDAQ: WPRT) ("Westport" or "The Company") announces that, in consideration of the Company's announcement today regarding the signing of an investment agreement to form a joint venture to accelerate the comme

March 11, 2024 EX-99.1

Westport Announces Signing of Investment Agreement to Establish Previously Announced Joint Venture with Volvo Group

Exhibit 99.1 Westport Announces Signing of Investment Agreement to Establish Previously Announced Joint Venture with Volvo Group VANCOUVER, BC, March 11, 2024 /CNW/ - Westport Fuel Systems Inc. (TSX: WPRT) (NASDAQ: WPRT) ("Westport" or the "Company"), a leading supplier of advanced alternative fuel delivery systems and components for the global transportation industry, is pleased to announce the s

March 11, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 11, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport Announces Signing of Investment Agreement to Establish Previously Announced Joint Venture with Volvo Group VANCOUVER, BC (March 11, 2024) - Westport Fuel Systems Inc.

March 5, 2024 EX-99.1

Westport to Issue Fourth Quarter 2023 Financial Results on March 18, 2024

Exhibit 99.1 Westport to Issue Fourth Quarter 2023 Financial Results on March 18, 2024 VANCOUVER, BC, March 4, 2024 /CNW/ - Westport Fuel Systems Inc. (TSX: WPRT ) (Nasdaq: WPRT) announces it will release financial results for the fourth quarter of 2023 on Monday, March 18, 2024, after market close. A conference call and webcast to discuss the financial results and other corporate developments wil

March 5, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-3415

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Addr

March 5, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport to Issue Fourth Quarter 2023 Financial Results on March 18, 2024 March 4, 2024 VANCOUVER - Westport Fuel Systems Inc.

February 26, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

February 26, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport Announces Methanol HPDI™ Project with a Leading Global Supplier of Power Solutions for Marine Applications Represents the Inaugural Adaptation of the HPDI Fuel System Utilizing Methanol for Marine Applications VANCOUVER, BC (Feb.

February 26, 2024 EX-99.1

Represents the Inaugural Adaptation of the HPDI Fuel System Utilizing Methanol for Marine Applications

Exhibit 99.1 Westport Announces Methanol HPDI™ Project with a Leading Global Supplier of Power Solutions for Marine Applications Represents the Inaugural Adaptation of the HPDI Fuel System Utilizing Methanol for Marine Applications VANCOUVER, BC, Feb. 26, 2024 /CNW/ - Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternative fue

January 25, 2024 EX-7.2

LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS UNDER SECTIONS 13(D) AND 13(G) OF THE SECURITIES EXCHANGE ACT OF 1934

EX-7.2 3 d736737dex72.htm EX-7.2 Exhibit 7.2 LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS UNDER SECTIONS 13(D) AND 13(G) OF THE SECURITIES EXCHANGE ACT OF 1934 The undersigned hereby make, constitute and appoint each of Eileen Wheatman and Kevin Douglas, acting either individually or together, as each of the undersigned’s true and lawful attorneys-in-fact, with full power and authority as h

January 25, 2024 SC 13D/A

Westport Fuel Systems Inc / DOUGLAS KEVIN - SC 13D/A Activist Investment

SC 13D/A 1 d736737dsc13da.htm SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8) Westport Fuel Systems Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 960908507 (CUSIP Number) Ryan J. York Accretive Legal, PLLC 34522 N Scottsdale Rd., STE 120-113 Scottsdale, AZ 85266 (425) 786-9

January 25, 2024 EX-7.1

AGREEMENT REGARDING JOINT FILING OF STATEMENT ON SCHEDULE 13D

EX-7.1 2 d736737dex71.htm EX-7.1 Exhibit 7.1 AGREEMENT REGARDING JOINT FILING OF STATEMENT ON SCHEDULE 13D Each of the undersigned hereby acknowledges and agrees, pursuant to the provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, that the Schedule 13D to which this Agreement is attached as an Exhibit, and any amendments thereto, with respect to the be

January 16, 2024 EX-99.1

Tony Guglielmin to step down as Interim CEO and remain on Westport's Board of Directors

Exhibit 99.1 Westport Appoints Dan Sceli as Chief Executive Officer Tony Guglielmin to step down as Interim CEO and remain on Westport's Board of Directors VANCOUVER, BC, Jan. 16, 2024 /CNW/ - Westport Fuel Systems Inc. ("Westport" of the "Company") (TSX: WPRT) (Nasdaq: WPRT) a leading supplier of advanced alternative fuel systems and components for the global transportation industry, today announ

January 16, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

January 16, 2024 EX-99.1

EX-99.1

NEWS RELEASE Westport Appoints Dan Sceli as Chief Executive Officer Tony Guglielmin to step down as Interim CEO and remain on Westport’s Board of Directors VANCOUVER, BC (January 16, 2024) – Westport Fuel Systems Inc.

December 19, 2023 EX-99.1

Westport Awarded Development Contract with a Global Heavy Truck Manufacturer to Adapt and Commercialize Next Gen LNG HPDI™ Fuel System for the Euro 7 Vehicle Platform

Exhibit 99.1 Westport Awarded Development Contract with a Global Heavy Truck Manufacturer to Adapt and Commercialize Next Gen LNG HPDI™ Fuel System for the Euro 7 Vehicle Platform VANCOUVER, BC, Dec. 19, 2023 /CNW/ - Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (NASDAQ: WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportati

December 19, 2023 EX-99.1

EX-99.1

NEWS RELEASE Westport Awarded Development Contract with a Global Heavy Truck Manufacturer to Adapt and Commercialize Next Gen LNG HPDI™ Fuel System for the Euro 7 Vehicle Platform VANCOUVER, BC (Dec.

December 19, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

December 12, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

December 12, 2023 EX-99.1

H2 HPDI™ Fuel System-Equipped Truck Operated by Heavy Hauler, KAJ Inrikes, Transports Trailer in Älmhult

Exhibit 99.1 Westport Joins Forces with Transportation and Energy Partners to Demonstrate ICE Hydrogen-Powered Transport in Sweden H2 HPDI™ Fuel System-Equipped Truck Operated by Heavy Hauler, KAJ Inrikes, Transports Trailer in Älmhult VANCOUVER, BC , Dec. 12, 2023 /CNW/ - Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternativ

December 12, 2023 EX-99.1

EX-99.1

Internal NEWS RELEASE Westport Joins Forces with Transportation and Energy Partners to Demonstrate ICE Hydrogen-Powered Transport in Sweden H2 HPDI™ Fuel System-Equipped Truck Operated by Heavy Hauler, KAJ Inrikes, Transports Trailer in Älmhult VANCOUVER, BC (Dec.

November 8, 2023 EX-99.1

Westport Fuel Systems Reports Third Quarter 2023 Financial Results

Exhibit 99.1 Westport Fuel Systems Reports Third Quarter 2023 Financial Results VANCOUVER, BC, November 7, 2023 /CNW/ - Westport Fuel Systems Inc. ("Westport") (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, reported financial results for the third quarter ended September 30, 2023, and provided an update on

November 8, 2023 EX-99.1

EX-99.1

WESTPORT FUEL SYSTEMS INC. » 1 Westport Fuel Systems Reports Third Quarter 2023 Financial Results November 7, 2023 VANCOUVER, BC - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, reported financial results for the third quarter ended September 30, 2023, and provided an u

November 8, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

November 7, 2023 EX-99.1

EX-99.1

NEWS RELEASE Westport Announces Hydrogen HPDI™ Project with a Leading Global Locomotive Original Equipment Manufacturer Represents the Inaugural Adaptation of H2 HPDI Fuel System for Rail Applications VANCOUVER, BC (Nov.

November 7, 2023 EX-99.1

Represents the Inaugural Adaptation of H2 HPDI Fuel System for Rail Applications

Exhibit 99.1 Westport Announces Hydrogen HPDI™ Project with a Leading Global Locomotive Original Equipment Manufacturer Represents the Inaugural Adaptation of H2 HPDI Fuel System for Rail Applications VANCOUVER, BC, Nov. 6, 2023 /CNW/ - Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternative fuel systems and components for the

November 7, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

November 7, 2023 EX-99.2

WESTPORT FUEL SYSTEMS INC. Condensed Consolidated Interim Balance Sheets (unaudited) (Expressed in thousands of United States dollars, except share amounts) September 30, 2023 and December 31, 2022

Condensed Consolidated Interim Financial Statements (unaudited) (Expressed in thousands of United States dollars) WESTPORT FUEL SYSTEMS INC.

November 7, 2023 EX-99.1

Management's Discussion and Analysis

Management's Discussion and Analysis BASIS OF PRESENTATION This Management’s Discussion and Analysis (“MD&A”) for Westport Fuel Systems Inc.

November 7, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (A

October 17, 2023 EX-99.1

Westport to Issue Third Quarter 2023 Financial Results on November 7, 2023

Exhibit 99.1 Westport to Issue Third Quarter 2023 Financial Results on November 7, 2023 VANCOUVER, BC, Oct. 17, 2023 /CNW/ - Westport Fuel Systems Inc. (TSX: WPRT) (Nasdaq: WPRT) announces it will release financial results for the third quarter of 2023 on Tuesday, November 7, 2023, after market close. A conference call and webcast to discuss the financial results and other corporate developments w

October 17, 2023 EX-99.1

EX-99.1

NEWS RELEASE Westport to Issue Third Quarter 2023 Financial Results on November 7, 2023 October 17, 2023 VANCOUVER - Westport Fuel Systems Inc.

October 17, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

October 10, 2023 EX-99.1

EX-99.1

NEWS RELEASE Westport Collaborates with Transportation and Energy Partners on Hydrogen-Powered Heavy Truck Demonstration in Spain H2 HPDI™-Equipped Truck Transports Fresh Freight for Mercadona Supermarket Chain in Madrid VANCOUVER, BC (Oct.

October 10, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 001-34

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Ad

October 10, 2023 EX-99.1

H2 HPDI™-Equipped Truck Transports Fresh Freight for Mercadona Supermarket Chain in Madrid

Exhibit 99.1 Westport Collaborates with Transportation and Energy Partners on Hydrogen-Powered Heavy Truck Demonstration in Spain H2 HPDI™-Equipped Truck Transports Fresh Freight for Mercadona Supermarket Chain in Madrid VANCOUVER, BC, Oct. 10, 2023 /CNW/ - Westport Fuel Systems Inc. ("Westport" or the "Company") (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternative fuel systems a

August 22, 2023 EX-99.1

EX-99.1

NEWS RELEASE FOR IMMEDIATE RELEASE Westport Announces Resignation of David Johnson, Chief Executive Officer, and Names Interim CEO VANCOUVER, BC (August 22, 2023) – Westport Fuel Systems Inc.

August 22, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 22, 2023 EX-99.1

Westport Announces Resignation of David Johnson, Chief Executive Officer, and Names Interim CEO

Exhibit 99.1 Westport Announces Resignation of David Johnson, Chief Executive Officer, and Names Interim CEO VANCOUVER, BC, Aug. 22, 2023 /CNW/ - Westport Fuel Systems Inc. (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, announced today that David Johnson, Chief Executive Officer has decided to step down as

August 9, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 001-34152 Westport Fuel Systems Inc. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 9, 2023 EX-99.1

EX-99.1

WESTPORT FUEL SYSTEMS INC. » 1 Westport Fuel Systems Reports Second Quarter 2023 Financial Results August 8, 2023 VANCOUVER, BC - Westport Fuel Systems Inc. (“Westport") (TSX:WPRT / Nasdaq:WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, reported financial results for the second quarter ended June 30, 2023, and provided an update

August 9, 2023 EX-99.1

Westport Fuel Systems Reports Second Quarter 2023 Financial Results

EX-99.1 2 ex991.htm NEWS RELEASE DATED AUGUST 8, 2023 Exhibit 99.1 Westport Fuel Systems Reports Second Quarter 2023 Financial Results VANCOUVER, BC, Aug. 8, 2023 /CNW/ - Westport Fuel Systems Inc. ("Westport") (TSX: WPRT) (Nasdaq: WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, reported financial results for the second quarter

August 8, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 001-341

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 001-34152 WESTPORT FUEL SYSTEMS INC. (Translation of registrant's name into English) 1691 West 75th Avenue, Vancouver, British Columbia, Canada, V6P 6P2 (Add

August 8, 2023 EX-99.1

Westport Awarded Additional Production Supply Agreement for Euro 7 LPG Fuel Systems by Global OEM

Exhibit 99.1 Westport Awarded Additional Production Supply Agreement for Euro 7 LPG Fuel Systems by Global OEM VANCOUVER, BC, Aug. 8, 2023 /CNW/ - Westport Fuel Systems Inc. (TSX: WPRT) (NASDAQ: WPRT), a leading supplier of advanced alternative fuel systems and components for the global transportation industry, announced today it has been designated as the supplier of liquified petroleum gas (LPG)

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