# EDGAR Filing Document

**Accession Number:** 0001137091
**File Stem:** 0001193125-25-140290
**Filing Date:** 2025-6
**Character Count:** 5543
**Document Hash:** fb7c30800a3507b5ed261488023f24c7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-140290.hdr.sgml**: 20250613

**ACCESSION NUMBER**: 0001193125-25-140290

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 8

**FILED AS OF DATE**: 20250613

**DATE AS OF CHANGE**: 20250613

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** POWER SOLUTIONS INTERNATIONAL, INC.
- **CENTRAL INDEX KEY:** 0001137091
- **STANDARD INDUSTRIAL CLASSIFICATION:** ENGINES & TURBINES [3510]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 330963637
- **STATE OF INCORPORATION:** IL
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35944
- **FILM NUMBER:** 251044676

**BUSINESS ADDRESS:**
- **STREET 1:** 201 MITTEL DRIVE
- **CITY:** WOOD DALE
- **STATE:** IL
- **ZIP:** 60191
- **BUSINESS PHONE:** 630-350-9400

**MAIL ADDRESS:**
- **STREET 1:** 201 MITTEL DRIVE
- **CITY:** WOOD DALE
- **STATE:** IL
- **ZIP:** 60191

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FORMAT INC
- **DATE OF NAME CHANGE:** 20060901

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FORMAT INC /FA/
- **DATE OF NAME CHANGE:** 20010321

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549**![LOGO](g893824dsp1.jpg)

**SCHEDULE 14A** 

**Proxy Statement Pursuant to Section 14(a) of the** 

**Securities Exchange Act of 1934** 

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary proxy statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** 

☐ Definitive proxy statement

☒ Definitive additional materials

☐ Soliciting material pursuant to Rule 14a-11(c) or Rule 14a-12 

**POWER SOLUTIONS INTERNATIONAL, INC.** 

Payment of Filing Fee (Check the appropriate box):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

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![LOGO](g893824dsp2.jpg)

POWER SOLUTIONS INTERNATIONAL, INC.

201 MITTEL DRIVE

WOOD DALE, IL 60191

ATTN: KEN JENKE

V75783-P28373

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| |
|:---|
| <br> Your **Vote** Counts! |
| **POWER SOLUTIONS INTERNATIONAL, INC.** |
| 2025 Annual Meeting |
| Vote by July 23, 2025<br>11:59 PM ET |
| ![LOGO](g893824dsp2a.jpg)  |

---

You invested in POWER SOLUTIONS INTERNATIONAL, INC. and it's time to vote!

You have the right to vote on proposals being presented at the Annual Meeting. **This is an important notice regarding the availability of proxy materials for the stockholder meeting to be held on July 24, 2025.**

Get informed before you vote

View the Notice of Annual Meeting, Proxy Statement and Annual Report on Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to July 10, 2025. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

![LOGO](g893824dsp2b.jpg)

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp; **Smartphone users**<br>| ![LOGO](g893824dsp2d.jpg) | **Vote Virtually at the Meeting\***<br>|
| &nbsp;&nbsp;&nbsp;Point your camera here and | ![LOGO](g893824dsp2d.jpg) | July 24, 2025 |
| &nbsp;&nbsp;&nbsp;vote without entering a | ![LOGO](g893824dsp2d.jpg) | 8:00 AM CT |
| &nbsp;&nbsp;&nbsp;control number |  |  |
| &nbsp;&nbsp;&nbsp; ![LOGO](g893824dsp2c.jpg) | Virtually at:<br> www.virtualshareholdermeeting.com/PSIX2025 | Virtually at:<br> www.virtualshareholdermeeting.com/PSIX2025 |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*Please check the meeting materials for any special requirements for meeting attendance.

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**Vote at www.ProxyVote.com** 

**THIS IS NOT A VOTABLE BALLOT** 

This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | |
|:---|:---|
| **Voting Items** | **Board<br>Recommends** |
| 1. Election of Directors |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Nominees:** |  |
|  1a. Jiwen Zhang | **![LOGO](g893824dsp3.jpg) For** |
|  1b. Kui Jiang | **![LOGO](g893824dsp3.jpg) For** |
|  1c. Frank P. Simpkins | **![LOGO](g893824dsp3.jpg) For** |
|  1d. Courtney C. Shea | **![LOGO](g893824dsp3.jpg) For** |
|  1e. Hong He | **![LOGO](g893824dsp3.jpg) For** |
|  1f. Gengsheng Zhang | **![LOGO](g893824dsp3.jpg) For** |
|  1g. Fuzhang Yu | **![LOGO](g893824dsp3.jpg) For** |
| 2. Ratification of the appointment of BDO USA, P.C. as the independent registered public accounting firm for the fiscal year ending December 31, 2025. | **![LOGO](g893824dsp3.jpg) For** |
| 3. To approve, by non-binding advisory vote, the compensation of the Company's named executive officers. | **![LOGO](g893824dsp3.jpg) For** |
| 4. To approve the amendment of the Amended and Restated 2012 Incentive Compensation Plan to extend the expiration date. | **![LOGO](g893824dsp3.jpg) For** |
| **NOTE:** Such other business as may properly come before the meeting or any adjournment thereof. |  |

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Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings".

V75784-P28373