# EDGAR Filing Document

**Accession Number:** 0001320461
**File Stem:** 0001320461-26-000063
**Filing Date:** 2026-4
**Character Count:** 2430
**Document Hash:** b4815521e8b21faebcf0c157acae8cc9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001320461-26-000063.hdr.sgml**: 20260402

**ACCESSION NUMBER**: 0001320461-26-000063

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260402

**DATE AS OF CHANGE**: 20260402

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cooper-Standard Holdings Inc.
- **CENTRAL INDEX KEY:** 0001320461
- **STANDARD INDUSTRIAL CLASSIFICATION:** MOTOR VEHICLE PARTS & ACCESSORIES [3714]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 201945088
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36127
- **FILM NUMBER:** 26831349

**BUSINESS ADDRESS:**
- **STREET 1:** 40300 TRADITIONS DRIVE
- **CITY:** NORTHVILLE
- **STATE:** MI
- **ZIP:** 48168
- **BUSINESS PHONE:** 248-596-5900

**MAIL ADDRESS:**
- **STREET 1:** 40300 TRADITIONS DRIVE
- **CITY:** NORTHVILLE
- **STATE:** MI
- **ZIP:** 48168

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CSA Acquisition Corp.
- **DATE OF NAME CHANGE:** 20050311

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549** 

**SCHEDULE 14A** 

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

**Securities Exchange Act of 1934** 

Filed by the Registrant **☒**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Filed by a party other than the Registrant **☐**

Check the appropriate box:

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| | |
|:---|:---|
| ◻ | 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 §240.14a-12 |

---

**Cooper-Standard Holdings Inc.**

**(Name of Registrant as Specified In Its Charter)**

**(Name of Person(s) Filing Proxy Statement, if Other Than The Registrant)**

Payment of Filing Fee (Check all boxes that apply):

---

| | |
|:---|:---|
| **☒** | 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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![cooper-standardholdingsincb.jpg](cooper-standardholdingsincb.jpg)

![cooper-standardholdingsincc.jpg](cooper-standardholdingsincc.jpg)