Common Stock, par value $1.00 per share

Ampco-Pittsburgh Corporation

726 Bell Avenue, Suite 301, Carnegie, PA, 15106

The Louis Berkman Investment Company

600 Grant Street, Suite 3230, Pittsburgh, Pennsylvania 15219-2704

The Louis Berkman Investment Company ("LBIC") is an investment holding company incorporated in the state of Ohio. The names, addresses and principal occupations of the directors and executive officers of LBIC are set forth in Appendix A attached hereto. Such information is incorporation herein by reference.

During the last five years, neither the Reporting Person nor any of the directors and executive officers of LBIC have been a party to any civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which he or she is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violations with respect to such laws.

All directors and executive officers of LBIC are citizens of the United States.

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.

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.

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.

As of the date of this report, Mr. Laurence Paul, a Director and President of LBIC, beneficially owns 84,368 Common Shares of the Issuer (excluding Common Shares owned by LBIC), which includes 12,728 shares of restricted stock of the Issuer. Mr. Laurence Paul has sole voting power over 84,368 shares and dispositive power over 71,640 shares. As of the date of this report, Mr. Stephen Paul, a Director of the Issuer and a Director and President of LBIC, beneficially owns 112,764 Common Shares of the Issuer (excluding Common Shares owned by LBIC). Mr. Stephen Paul has sole voting and dispositive powers over these 112,764 Common Shares.