# EDGAR Filing Document

**Accession Number:** 0001351834
**File Stem:** 0001193125-25-300922
**Filing Date:** 2025-11
**Character Count:** 7079
**Document Hash:** 482dc4dfdf89d700b6a0c2f43e8ef13b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-300922.hdr.sgml**: 20251126

**ACCESSION NUMBER**: 0001193125-25-300922

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251126

**DATE AS OF CHANGE**: 20251126

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMPCO PITTSBURGH CORP
- **CENTRAL INDEX KEY:** 0000006176
- **STANDARD INDUSTRIAL CLASSIFICATION:** PUMPS & PUMPING EQUIPMENT [3561]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 251117717
- **STATE OF INCORPORATION:** PA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-08805
- **FILM NUMBER:** 251531843

**BUSINESS ADDRESS:**
- **STREET 1:** 726 BELL AVENUE
- **STREET 2:** SUITE 301
- **CITY:** CARNEGIE
- **STATE:** PA
- **ZIP:** 15106
- **BUSINESS PHONE:** 412-456-4400

**MAIL ADDRESS:**
- **STREET 1:** 726 BELL AVENUE
- **STREET 2:** SUITE 301
- **CITY:** CARNEGIE
- **STATE:** PA
- **ZIP:** 15106

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SCREW & BOLT CORP OF AMERICA
- **DATE OF NAME CHANGE:** 19710518
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Louis Berkman Investment CO
- **CENTRAL INDEX KEY:** 0001351834

**ORGANIZATION NAME:**
- **EIN:** 542095416
- **STATE OF INCORPORATION:** OH
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 330 N. SEVENTH STREET
- **CITY:** STEUBENVILLE
- **STATE:** OH
- **ZIP:** 43952
- **BUSINESS PHONE:** 740.283.3722

**MAIL ADDRESS:**
- **STREET 1:** 330 N. SEVENTH STREET
- **CITY:** STEUBENVILLE
- **STATE:** OH
- **ZIP:** 43952

### Attached PDF Documents

**Attachment 1:** `ck0000000000-ex99_a.pdf`

_No text found in this document._

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 8)**

**Ampco-Pittsburgh Corporation**

*(Name of Issuer)*

**Common Stock, par value $1.00 per share**

*(Title of Class of Securities)*

**032037103**

*(CUSIP Number)*

**Jennifer L. Gloff**<br>The Louis Berkman Investment Company<br>600 Grant Street, Suite 3230<br>Pittsburgh PA 15219-2704<br>(412) 652-9480

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**11/17/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **032037103** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**The Louis Berkman Investment Company** | Name of reporting person<br>**The Louis Berkman Investment Company** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**OHIO** | Citizenship or place of organization<br>**OHIO** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**3127792.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**3127792.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**3127792.00** | Aggregate amount beneficially owned by each reporting person<br>**3127792.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**15.39%** | Percent of class represented by amount in Row (11)<br>**15.39%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, par value $1.00 per share

**(b) Name of Issuer:**
Ampco-Pittsburgh Corporation

**(c) Address of Issuer's Principal Executive Offices:**
726 Bell Avenue, Suite 301, Carnegie, PA, 15106

This Amendment No. 8 to Schedule 13D ("Amendment") amends and supplements the Schedule 13D filed on April 28, 2006 by The Louis Berkman Investment Company, an Ohio corporation ("LBIC"), with respect to the Common Stock, par value $1.00 per share ("Common Shares"), of the Ampco-Pittsburgh Corporation (the "Issuer"), as amended by Amendment No. 1 thereto filed on July 5, 2007, Amendment No. 2 thereto filed on December 26, 2007, Amendment No. 3 thereto filed on February 2, 2009, Amendment No. 4 thereto filed on April 10, 2018, Amendment No. 5 thereto filed on September 22, 2020, Amendment No. 6 thereto filed on March 1, 2022 and Amendment No. 7 thereto filed on November 28, 2022.

**Item 4. Purpose of Transaction**

This Amendment is being filed to report the purchase by LBIC of 93,000 common shares of the Issuer ("Common Shares") for a weighted average of $2.67 per whole Common Share on November 17, 2025 for investment purposes.
Except as set forth herein, the Reporting Person filing this Amendment has no plans or proposals that relate to or would result in any of the actions or events set forth in paragraphs (a) through (j) of Item 4 of Schedule 13D.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The responses of the Reporting Person with respect to Rows 7, 8, 9, 10, 11 and 13 of the cover pages to this Schedule 13D are incorporated herein by reference.

**(b)**
The responses of the Reporting Person with respect to Rows 7, 8, 9, 10, 11 and 13 of the cover pages to this Schedule 13D are incorporated herein by reference. Share percentage calculations in this Schedule are based on 20,326,389 Common Shares outstanding as of November 7, 2025 as reported in the Issuer's Quarterly Report filed with the SEC on November 12, 2025, including the share percentage calculation of the Reporting Person's 15.39% ownership.

**(c)**
Purchase by LBIC of 93,000 Common Shares for a weighted average of $2.67 per whole Common Share on November 17, 2025 for investment purposes.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** The Louis Berkman Investment Company

**Signature:** /s/ Jennifer L. Gloff

**Name/Title:** Jennifer L. Gloff, Chief Financial Officer and Treasurer

**Date:** 11/26/2025