Weichai Power Hong Kong International Development Co., Ltd → Ballard Power Systems Inc. BLDP

Stake: 10.32% Shares: 31,102,826 CUSIP: 058586108 Class: Common Shares

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

3 filings by this filer

2 other filings in the data moat

Short Interest · settle 2026-07-31

DTC 2.16

16,558,574 shares short · -35.7% vs prior

Post-Filing Returns · since 2026-05-15 on BLDP

+1 day

-2.7%

+5 days

+7.0%

+30 days

-6.5%

+60 days

-33.3%

+90 days

—

+180 days

—

Anchor price 4.45 on closest trading day on/after 2026-05-15. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Ballard Power Systems Inc.

Filed	Form	Filer	Stake	Shares
2026-05-15	SCHEDULE 13D/A	Weichai Power Hong Kong International Development Co., Ltd	11.61%	34,999,826	view →
2026-05-13	SCHEDULE 13D/A	Weichai Power Hong Kong International Development Co., Ltd	—	39,252,826	view →

Other Filings by Weichai Power Hong Kong International Development Co., Ltd

Filed	Form	Issuer	Stake	Shares
2026-05-15	SCHEDULE 13D/A	Ballard Power Systems Inc. BLDP	11.61%	34,999,826	view →
2026-05-13	SCHEDULE 13D/A	Ballard Power Systems Inc. BLDP	—	39,252,826	view →

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