Weichai America Corp. - 13 Aug 2025 SCHEDULE 13D/A Report for POWER SOLUTIONS INTERNATIONAL, INC. Common Stock, par value $0.001 per share (PSIX)

Filing Manager: Weichai America Corp.
Reporting Manager: Weichai America Corp.
Security: POWER SOLUTIONS INTERNATIONAL, INC. Common Stock, par value $0.001 per share
Symbol: PSIX
Shares outstanding: 23M shares
Disclosed Ownership: 11.5M shares
Ownership: 49.8%
Form type: SCHEDULE 13D/A
Filing time: 15 Aug 2025, 16:00:11 UTC
Date of event: 13 Aug 2025
Next filing: 19 Aug 2025
SEC: View on sec.gov

Reporting Managers (3)

Name	Ownership	Shares Owned	shared voting power	Signature	Title	CIK
Weichai America Corp.	49.8%	11.5M	11.5M	/s/ Jinguang Liu (aka Jin Liu)	Jinguang Liu (aka Jin Liu), Chief Financial Officer	0001702521
Weichai Power Co., Ltd.	49.8%	11.5M	11.5M	/s/ Chenglong Sun	Chenglong Sun, Authorized Representative	0001703367
Shandong Heavy Industry Group Co., Ltd.	49.8%	11.5M	11.5M	/s/ Chenglong Sun	Chenglong Sun, Authorized Representative	0001703252