# EDGAR Filing Document

**Accession Number:** 0001453015
**File Stem:** 0001213900-26-058833
**Filing Date:** 2026-5
**Character Count:** 15377
**Document Hash:** 73997e9f0795edae6f328ef1cea5ffd8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-058833.hdr.sgml**: 20260519

**ACCESSION NUMBER**: 0001213900-26-058833

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260519

**DATE AS OF CHANGE**: 20260519

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ballard Power Systems Inc.
- **CENTRAL INDEX KEY:** 0001453015
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRICAL INDUSTRIAL APPARATUS [3620]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 832202493
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-84685
- **FILM NUMBER:** 26996671

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 9000 GLENLYON PARKWAY
- **CITY:** BURNABY
- **PROVINCE COUNTRY:** A1
- **ZIP:** V5J 5J8
- **BUSINESS PHONE:** 604-454-0900

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 9000 GLENLYON PARKWAY
- **CITY:** BURNABY
- **PROVINCE COUNTRY:** A1
- **ZIP:** V5J 5J8

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** 7076991 Canada Inc.
- **DATE OF NAME CHANGE:** 20090102
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Weichai Power Hong Kong International Development Co., Ltd
- **CENTRAL INDEX KEY:** 0002095418

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** K3
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2102-03 CHINA MERCHANTS TWR SHUN TAK CTR
- **STREET 2:** 168-200 CONNAUGHT ROAD CENTRAL
- **CITY:** HONG KONG
- **PROVINCE COUNTRY:** F4
- **ZIP:** 00000
- **BUSINESS PHONE:** 852 22953686

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2102-03 CHINA MERCHANTS TWR SHUN TAK CTR
- **STREET 2:** 168-200 CONNAUGHT ROAD CENTRAL
- **CITY:** HONG KONG
- **PROVINCE COUNTRY:** F4
- **ZIP:** 00000

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 3)**

**Ballard Power Systems Inc.**

*(Name of Issuer)*

**Common Shares**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Yunyun HU**<br>2102-03 China Merchants Twr, Shun Tak<br>Ctr, 168-200 Connaught Rd Central<br>Hong Kong K3 00000<br>852 22953686

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**05/15/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Weichai Power Hong Kong International Development Co., Limited** | Name of reporting person<br>**Weichai Power Hong Kong International Development Co., Limited** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**BK** | Source of funds (See Instructions)<br>**BK** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**HONG KONG** | Citizenship or place of organization<br>**HONG KONG** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**31102826.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**31102826.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**31102826.00** | Aggregate amount beneficially owned by each reporting person<br>**31102826.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**10.32%** | Percent of class represented by amount in Row (11)<br>**10.32%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Weichai Power Co., Ltd.** | Name of reporting person<br>**Weichai Power Co., Ltd.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**BK** | Source of funds (See Instructions)<br>**BK** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**CHINA** | Citizenship or place of organization<br>**CHINA** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**31102826.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**31102826.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**31102826.00** | Aggregate amount beneficially owned by each reporting person<br>**31102826.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**10.32%** | Percent of class represented by amount in Row (11)<br>**10.32%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Shandong Heavy Industry Group Co., Ltd.** | Name of reporting person<br>**Shandong Heavy Industry Group Co., Ltd.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**BK** | Source of funds (See Instructions)<br>**BK** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**CHINA** | Citizenship or place of organization<br>**CHINA** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**31102826.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**31102826.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**31102826.00** | Aggregate amount beneficially owned by each reporting person<br>**31102826.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**10.32%** | Percent of class represented by amount in Row (11)<br>**10.32%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for 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.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Shares

**(b) Name of Issuer:**
Ballard Power Systems Inc.

**(c) Address of Issuer's Principal Executive Offices:**
9000 Glenlyon Parkway, BURNABY, BRITISH COLUMBIA, A1, 5J8

This Amendment No. 3 amends the statement on the Schedule 13D originally filed by the Reporting Persons on November 23, 2018 (as amended to date, the "Schedule 13D"). Except as otherwise provided herein, each Item of the Schedule 13D remains unchanged. This Amendment No. 3 is being filed by the Reporting Persons to report additional open market sales by Weichai Hong Kong through a broker of an aggregate of 3,897,000 Common Shares of the Issuer pursuant to Rule 144 ("Rule 144") under the Securities Act of 1933, as amended, which resulted in a decrease of over one percent (1%) in the aggregate percentage beneficial ownership of the Reporting Persons, as previously reported in the Schedule 13D.

**Item 5. Interest in Securities of the Issuer**

**(a)**
(a) Item 5(a) of the Schedule 13D is hereby amended in its entirety as follows:

The aggregate number of securities and percentage of the class of securities of the Issuer beneficially owned by each Reporting Person named in Item 2(a), as well as the number of securities as to which such person is deemed to have sole power to vote or to direct the vote, shared power to vote or to direct the vote, sole power to dispose or to direct the disposition, shared power to dispose or direct the disposition, is set forth in the following table:

Number of Shares
                                                                               Power to Vote       Power to Dispose
                                       No of Securities                                                                                  Percent
Reporting Person        Beneficially Owned       Sole     Shared(1)         Sole     Shared(1)   of Class(2)

Weichai Hong Kong           31,102,826                0      31,102,826       0        31,102,826         10.32%
Weichai Power                   31,102,826                0      31,102,826       0        31,102,826         10.32%
SHIG                                  31,102,826                0       31,102,826      0        31,102,826          10.32%
Total(3)                               31,102,826                0      31,102,826       0        31,102,826          10.32%
(all Reporting Persons)

1. Weichai Hong Kong is the direct and record owner of 31,102,826 Common Shares and shares the power to vote and the power to dispose of all of such Common Shares with Weichai Power and SHIG by virtue of the fact that Weichai Power is Weichai Hong Kong's parent company, and Weichai Power is controlled by SHIG. SHIG holds less than 20% of the shares in Weichai Power but is able to exercise influence over Weichai Power by virtue of its status as the largest shareholder of Weichai Power and representatives or designees of SHIG currently comprise a majority of members of Weichai Power's board of directors.

2. 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.

3. The Reporting Persons disclaim membership in a group.

**(b)**
—

**(c)**
Item 5(c) of the Schedule 13D is hereby amended in its entirety as follows:

(c) During the past sixty days, Weichai Hong Kong sold an aggregate of 15,028,886 Common Shares in open market transactions as follows:

Date                Number of Common Shares Sold               Price per Common Share

5/8/2026                        2,111,111                                                         $4.2742
5/11/2026                      2,399,353                                                        $4.1767
5/12/2026                      2,368,422                                                        $4.2167
5/13/2026                      3,330,000                                                        $4.1725
5/14/2026                      923,000                                                           $4.1198
5/15/2026                      3,897,000                                                        $4.0688

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Weichai Power Hong Kong International Development Co., Limited

**Signature:** /s/ Yunyun Hu

**Name/Title:** Yunyun Hu/Director

**Date:** 05/19/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Weichai Power Co., Ltd.

**Signature:** /s/ Chenglong Sun

**Name/Title:** Chenglong Sun/Authorized Representative

**Date:** 05/19/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Shandong Heavy Industry Group Co., Ltd.

**Signature:** /s/ Chenglong Sun

**Name/Title:** Chenglong Sun/Authorized Representative

**Date:** 05/19/2026