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Form SCHEDULE 13D/A Ballard Power Systems Filed by: Weichai Power Hong Kong International Development Co., Ltd

May 19, 2026 11:26 AM





If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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SCHEDULE 13D




Comment for Type of Reporting Person:
1. The percentage of class of securities is calculated by dividing the number of Common Shares (as defined below) beneficially owned by the Reporting Persons (as defined below) by a total of 301,475,849 issued and outstanding Common Shares of the Issuer (as defined below), 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 ("SEC") on May 5, 2026.


SCHEDULE 13D




Comment for Type of Reporting Person:
1. The percentage of class of securities is calculated by dividing the number of Common Shares beneficially owned by the Reporting Persons by a total of 301,475,849 issued and outstanding Common Shares of the Issuer, 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 SEC on May 5, 2026.


SCHEDULE 13D




Comment for Type of Reporting Person:
1. The percentage of class of securities is calculated by dividing the number of Common Shares beneficially owned by the Reporting Persons by a total of 301,475,849 issued and outstanding Common Shares of the Issuer, 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 SEC on May 5, 2026.


SCHEDULE 13D


Weichai Power Hong Kong International Development Co., Limited
Signature:/s/ Yunyun Hu
Name/Title:Yunyun Hu/Director
Date:05/19/2026
Weichai Power Co., Ltd.
Signature:/s/ Chenglong Sun
Name/Title:Chenglong Sun/Authorized Representative
Date:05/19/2026
Shandong Heavy Industry Group Co., Ltd.
Signature:/s/ Chenglong Sun
Name/Title:Chenglong Sun/Authorized Representative
Date:05/19/2026

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