144 0002095418 XXXXXXXX LIVE 0001453015 Ballard Power Systems Inc. 000-53543 9000 Glenlyon Parkway Burnaby A1 V5J 5J8 604-454-0900 Weichai Power Hong Kong International Development Co., Limited 10% Shareholder Common Shares CLSA Limited

18/F, One Pacific Place 88 Queensway K3 0000

15028886 64699354.23 301475849 05/08/2026 Nasdaq Global Market Common Shares 11/13/2018 Investment Issuer N 46131712 11/13/2018 Cash Y * As of May 6, 2026.** As of March 31, 2026, the Issuer has 301,475,849 Common Shares outstanding, as reported on the Issuer's First Quarter 2026 Interim Financial Statements, attached as Exhibit 99.1 to the Form 6-K filed by the Issuer with the Securities and Exchange Commission on May 5, 2026. 05/08/2026 /s/ Yunyun HU