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POWER SOLUTIONS INTERNATIONAL, INC.

For the period ended Jun 30, 2026. Filed Aug 6, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 6, 2026

PSIX$37.72-3.7%Stored close · as of Nov 9, 2026

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Item 6. Exhibits

EXHIBIT INDEX

The following documents listed below that have been previously filed with the SEC (1934 Act File No. 001-35944) are incorporated herein by reference:

Incorporated by Reference Herein
Exhibit No. · Exhibit Description · Form · Exhibit · Filing Date · File No.
10.1Resignation Agreement and General Release, dated May 12, 2026, by and between Power Solutions International, Inc. and Constantine Xykis.8-K10.105/13/2026001-35944
10.2Employment Agreement between Power Solutions International, Inc. and Nan (Richard) Hu.8-K10.107/27/2026001-35944
31.1*Certification of Chief Executive Officer, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*Certification of Chief Financial Officer, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1**Certification of Chief Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes Oxley Act of 2002.
32.2**Certification of Chief Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes Oxley Act of 2002.
101.INS*XBRL Instance Document.
101.SCHXBRL Taxonomy Extension Schema Document.
101.CALXBRL Taxonomy Extension Calculation Linkbase Document.
101.LABXBRL Taxonomy Extension Labels Linkbase Document.
101.PREXBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF*XBRL Taxonomy Definition Linkbase Document.
104*Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed with this Report.

**This exhibit shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of that Section. Such exhibit shall not be deemed incorporated into any filing under the Securities Act of 1933, as amended, or the Exchange Act.

SIGNATURES

Pursuant to the requirements of the Exchange Act, the registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized, on the 6th day of August 2026.

POWER SOLUTIONS INTERNATIONAL, INC.
By:/s/ Xun Li
Name:Xun Li
Title:Chief Financial Officer & Interim Chief Executive Officer (Principal Financial Officer)
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.