SCHEDULE 13D/A

WESTPORT FUEL SYSTEMS INC

Common Shares · CUSIP: 960908507

Event date: 2025-04-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Kevin DouglasReported CIK 0001132859

  Shares: 1,816,689 · Class: 10.5%

• Michelle Douglas

  Shares: 1,329,478 · Class: 7.7%

• James E. Douglas, III

  Shares: 329,166 · Class: 1.9%

• K&M Douglas Trust

  Shares: 661,165 · Class: 3.8%

• Irrevocable Descendant's Trust FBO Alexander James Douglas

  Shares: 154,506 · Class: 0.9%

• Irrevocable Descendant's Trust FBO Amanda Anne Douglas

  Shares: 154,505 · Class: 0.9%

• Irrevocable Descendant's Trust FBO Jake Edward Douglas

  Shares: 154,506 · Class: 0.9%

• Irrevocable Descendant's Trust FBO Summer Jean Douglas

  Shares: 154,506 · Class: 0.9%

• Nonexempt Trust FBO Kevin G. Douglas

  Shares: 143,045 · Class: 0.8%

• Nonexempt Trust FBO James E. Douglas, III

  Shares: 143,043 · Class: 0.8%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.