X0306 4/A 2017-07-19 2017-07-21 0 0001370416 WESTPORT FUEL SYSTEMS INC. WPRT 0001132859 DOUGLAS KEVIN 125 E. SIR FRANCIS DRAKE BLVD., STE 400 LARKSPUR CA 94939 0 0 1 1 13(d)(3) group 0001268474 DOUGLAS FAMILY TRUST 125 E. SIR FRANCIS DRAKE BLVD., STE 400 LARKSPUR CA 94939 0 0 1 1 13(d)(3) group 0001268475 JAMES & JEAN DOUGLAS IRREVOCABLE DESCENDANTS TRUST 125 E. SIR FRANCIS DRAKE BLVD., STE 400 LARKSPUR CA 94939 0 0 1 1 13(d)(3) group 0001268476 DOUGLAS JAMES E III 125 E. SIR FRANCIS DRAKE BLVD., STE 400 LARKSPUR CA 94939 0 0 1 1 13(d)(3) group Common Stock 2017-07-19 4 A 0 150000 1.50 A 150000 I By Summer Douglas 2010 Trust These shares were inadvertently omitted from the Reporting Person's original Form 4. Each of the reporting persons hereunder (individually, a "Reporting Person" and collectively the "Reporting Persons") may be deemed a member of a "group" within the meaning of Section 13(d)(3) of the Securities and Exchange Act of 1934, as amended (the "Exchange Act") or Rule 13d-5 promulgated under the Exchange Act, with one or more of the other Reporting Persons. Although the Reporting Persons are reporting such securities as if they were members of a "group", the filing of this Form 4 shall not be deemed an admission by any Reporting Person that such Reporting Person is a beneficial owner of any securities other than those directly held by such Reporting Person. These shares are held directly by the Summer Douglas 2010 Trust and indirectly by Kevin Douglas who may be deemed to share dispositive power over such shares. /s/ Eileen Wheatman, attorney in fact for Kevin Douglas 2020-05-04 /s/ Eileen Wheatman, attorney in fact for Douglas Family Trust 2020-05-04 /s/ Eileen Wheatman, attorney in fact for James Douglas and Jean Douglas Irrevocable Descendants' Trust 2020-05-04 /s/ Eileen Wheatman, attorney in fact for James E. Douglas III 2020-05-04