Weichai America Corp. - 26 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: 23,045,488 shares
Disclosed Ownership: 10,716,152 shares
Ownership: 46%
Form type: SCHEDULE 13D/A
Filing time: 28 Aug 2025, 16:00:28 UTC
Date of event: 26 Aug 2025
Previous filing: 25 Aug 2025
SEC: View on sec.gov

Reporting Managers (3)

Name	Ownership	Shares Owned	shared voting power	Signature	Title	CIK
Weichai America Corp.	46%	10,716,152	10,716,152	/s/ Jinguang Liu (aka Jin Liu)	Jinguang Liu (aka Jin Liu), Chief Financial Officer	0001702521
Weichai Power Co., Ltd.	46%	10,716,152	10,716,152	/s/ Chenglong Sun	Chenglong Sun, Authorized Representative
Shandong Heavy Industry Group Co., Ltd.	46%	10,716,152	10,716,152	/s/ Chenglong Sun	Chenglong Sun, Authorized Representative