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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Name of Issuer)

(Title of Class of Securities)

(CUSIP Number)

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13D/A 0001641172-25-005855 0001517040 XXXXXXXX LIVE 21 Common Stock 08/05/2025 false 0001137091 73933G202 POWER SOLUTIONS INTERNATIONAL, INC. 201 Mittel Drive Wood Dale IL 60191 Gary S. Winemaster (630) 350-9400 19197 W Forest Lane Mundelein IL 60060-3493 0001517040 N Gary S. Winemaster OO N X1 1929982.00 681.00 1929982.00 681.00 1930663.00 N 8.4 IN Common Stock POWER SOLUTIONS INTERNATIONAL, INC. 201 Mittel Drive Wood Dale IL 60191 Item 5(a) of this Schedule 13D is hereby amended and restated in its entirety as follows: The information contained on the cover pages is incorporated herein by reference. The Reporting Person may be deemed to beneficially own 1,930,663 shares of Common Stock, representing 8.4% of the Common Stock outstanding based upon 23,008,511 shares of the Issuer's Common Stock outstanding as of May 30, 2025, as disclosed in the Issuer's Proxy Statement on Form DEF 14-A filed with the SEC on June 13, 2025. Item 5(b) of this Schedule 13D is hereby amended and restated in its entirety as follows: Number of shares the Reporting Person has: Sole power to vote or direct the vote: 1,929,982 Shared power to vote: 681 Sole power to dispose or direct the disposition of: 1,929,982 Shared power to dispose or direct the disposition of: 681 During the past sixty days, the Reporting Person has not engaged in any transactions in the Issuer's Common Stock other than the following: -- On July 31, 2025, the Reporting Person sold 9,785 shares of Common Stock at a weighted average price of $95.6647 per share in a series of open market transactions on the Nasdaq stock market. -- On August 1, 2025, the Reporting Person sold 22,189 shares of Common Stock at a weighted average price of $91.0405 per share in a series of open market transactions on the Nasdaq stock market. -- On August 4, 2025, the Reporting Person sold 700 shares of Common Stock at a weighted average price of $91.0214 per share in a series of open market transactions on the Nasdaq stock market. -- On August 5, 2025, the Reporting Person sold 71,079 shares of Common Stock at a weighted average price of $91.9776 per share in a series of open market transactions on the Nasdaq stock market. None. Not applicable. Gary S. Winemaster /s/ Gary S. Winemaster Gary S. Winemaster 08/07/2025