AP

SEC source: 0001193125-26-372998 · ownership.xml · nonDerivative · entry 1

McNair Darrell L · CIK 0001912179 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,686

F1 · kind: Reflects 5,600 shares of common stock, $1 par value of Ampco-Pittsburgh Corporation transferred by the reporting person to a donor-advised fund sponsored by a charitable organization under Section 501(c)(3) of the Internal Revenue Code.

SEC source: 0001193125-26-284801 · ownership.xml · nonDerivative · entry 1

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,233

SEC source: 0001193125-26-276862 · ownership.xml · nonDerivative · entry 1

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 190,733

SEC source: 0001193125-26-232106 · ownership.xml · nonDerivative · entry 1

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 557,694

SEC source: 0001193125-26-228361 · ownership.xml · nonDerivative · entry 1

McNair Darrell L · CIK 0001912179 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,286

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0001193125-26-228350 · ownership.xml · nonDerivative · entry 1

PAUL LAURENCE E · CIK 0001190966 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,742

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0001193125-26-228330 · ownership.xml · nonDerivative · entry 1

GERMAN MICHAEL I · CIK 0001012714 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 229,044

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0001193125-26-228319 · ownership.xml · nonDerivative · entry 1

LIEBERMAN WILLIAM K · CIK 0001279916 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,286

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0001193125-26-228293 · ownership.xml · nonDerivative · entry 1

Fessenden Elizabeth Anne · CIK 0001452008 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 126,704

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0001193125-26-228274 · ownership.xml · nonDerivative · entry 1

DeMichiei Robert · CIK 0001928634 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,559

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0001193125-26-229993 · ownership.xml · nonDerivative · entry 5

Anderson David George · CIK 0001905958 · VP, CFO & Treasurer, Pres. ALS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,966

F5 · shares: Represents a grant of restricted stock units under the Ampco-Pittsburgh Corporation ("Company") 2016 Omnibus Incentive Plan, as amended and restated as of May 8, 2025. Each restricted stock unit represents the contingent right to receive upon vesting of the unit, one share of the Company's common stock. Restricted stock units vest in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001193125-26-229993 · ownership.xml · nonDerivative · entry 4

Anderson David George · CIK 0001905958 · VP, CFO & Treasurer, Pres. ALS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,849

F4 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the performance-based restricted stock units.

SEC source: 0001193125-26-229993 · ownership.xml · nonDerivative · entry 3

Anderson David George · CIK 0001905958 · VP, CFO & Treasurer, Pres. ALS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,065

F3 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2025 grant of Restricted Stock Units.

SEC source: 0001193125-26-229993 · ownership.xml · nonDerivative · entry 2

Anderson David George · CIK 0001905958 · VP, CFO & Treasurer, Pres. ALS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,554

F2 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2024 grant of Restricted Stock Units.

SEC source: 0001193125-26-229993 · ownership.xml · nonDerivative · entry 1

Anderson David George · CIK 0001905958 · VP, CFO & Treasurer, Pres. ALS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,733

F1 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2023 grant of Restricted Stock Units.

SEC source: 0001193125-26-229987 · ownership.xml · nonDerivative · entry 5

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 191,280

F5 · shares: Represents a grant of restricted stock units under the Ampco-Pittsburgh Corporation ("Company") 2016 Omnibus Incentive Plan, as amended and restated as of May 8, 2025. Each restricted stock unit represents the contingent right to receive upon vesting of the unit, one share of the Company's common stock. Restricted stock units vest in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001193125-26-229987 · ownership.xml · nonDerivative · entry 4

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 176,224

F4 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the performance-based restricted stock units.

SEC source: 0001193125-26-229987 · ownership.xml · nonDerivative · entry 3

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,409

F3 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2025 grant of Restricted Stock Units.

SEC source: 0001193125-26-229987 · ownership.xml · nonDerivative · entry 2

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 197,956

F2 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2024 grant of Restricted Stock Units.

SEC source: 0001193125-26-229987 · ownership.xml · nonDerivative · entry 1

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 201,122

F1 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2023 grant of Restricted Stock Units.

SEC source: 0001193125-26-229984 · ownership.xml · nonDerivative · entry 5

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 554,394

F5 · shares: Represents a grant of restricted stock units under the Ampco-Pittsburgh Corporation ("Company") 2016 Omnibus Incentive Plan, as amended and restated as of May 8, 2025. Each restricted stock unit represents the contingent right to receive upon vesting of the unit, one share of the Company's common stock. Restricted stock units vest in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001193125-26-229984 · ownership.xml · nonDerivative · entry 4

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 513,334

F4 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the performance-based restricted stock units.

SEC source: 0001193125-26-229984 · ownership.xml · nonDerivative · entry 3

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 559,990

F3 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2025 grant of Restricted Stock Units.

SEC source: 0001193125-26-229984 · ownership.xml · nonDerivative · entry 2

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 567,767

F2 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2024 grant of Restricted Stock Units.

SEC source: 0001193125-26-229984 · ownership.xml · nonDerivative · entry 1

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 576,335

F1 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2023 grant of Restricted Stock Units.

SEC source: 0001193125-26-115410 · ownership.xml · nonDerivative · entry 1

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 585,731

SEC source: 0001193125-26-093860 · ownership.xml · nonDerivative · entry 1

Anderson David George · CIK 0001905958 · VP, CFO & Treasurer, Pres. ALS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,103

F1 · shares: These shares represent shares to be issued in connection with the satisfaction of performance requirements based on Ampco-Pittsburgh Corporation's achievement of targeted Relative Total Shareholder Return. The vesting of these shares is contingent on the Reporting Person's continued service to the Issuer through May 15, 2026.

SEC source: 0001193125-26-093699 · ownership.xml · nonDerivative · entry 1

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 204,151

F1 · shares: These shares represent shares to be issued in connection with the satisfaction of performance requirements based on Ampco-Pittsburgh Corporation's achievement of targeted Relative Total Shareholder Return. The vesting of these shares is contingent on the Reporting Person's continued service to the Issuer through May 15, 2026.

SEC source: 0001193125-26-093655 · ownership.xml · nonDerivative · entry 1

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 578,231

F1 · shares: These shares represent shares to be issued in connection with the satisfaction of performance requirements based on Ampco-Pittsburgh Corporation's achievement of targeted Relative Total Shareholder Return. The vesting of these shares is contingent on the Reporting Person's continued service to the Issuer through May 15, 2026.

SEC source: 0001193125-25-304641 · ownership.xml · nonDerivative · entry 1

McBrayer Brett · CIK 0001744984 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 448,631

SEC source: 0001193125-25-288045 · ownership.xml · nonDerivative · entry 1

McNair Darrell L · CIK 0001912179 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,912

SEC source: 0001193125-25-286131 · ownership.xml · nonDerivative · entry 1

McNair Darrell L · CIK 0001912179 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,912

SEC source: 0001193125-25-285590 · ownership.xml · nonDerivative · entry 1

GERMAN MICHAEL I · CIK 0001012714 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221,670

SEC source: 0001193125-25-299036 · ownership.xml · nonDerivative · entry 1

Louis Berkman Investment CO · CIK 0001351834 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,127,792

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.70 to $2.57, inclusive. The reporting person undertakes to provide to any security holder of Ampco-Pittsburgh Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.

SEC source: 0000950170-25-072678 · ownership.xml · nonDerivative · entry 1

PAUL LAURENCE E · CIK 0001190966 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,368

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0000950170-25-072671 · ownership.xml · nonDerivative · entry 1

McNair Darrell L · CIK 0001912179 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,912

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0000950170-25-072668 · ownership.xml · nonDerivative · entry 1

LIEBERMAN WILLIAM K · CIK 0001279916 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,912

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0000950170-25-072663 · ownership.xml · nonDerivative · entry 1

GERMAN MICHAEL I · CIK 0001012714 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,670

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0000950170-25-072643 · ownership.xml · nonDerivative · entry 1

Fessenden Elizabeth Anne · CIK 0001452008 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 119,330

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0000950170-25-072646 · ownership.xml · nonDerivative · entry 1

DeMichiei Robert · CIK 0001928634 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,185

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0000950170-25-072638 · ownership.xml · nonDerivative · entry 1

ABEL JAMES J · CIK 0001192135 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,546

F1 · shares: Represents a grant of restricted stock under the Ampco-Pittsburgh Corporation 2016 Omnibus Incentive Plan, as amended and restated May 8, 2025. These grants of restricted stock vest on the first anniversary of the grant date.

SEC source: 0000950170-25-073234 · ownership.xml · derivative · entry 4

Anderson David George · CIK 0001905958 · President, Air & Liquid Systms

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,546

Underlying: Common Stock · 18,546 shares

Expires 2028-05-15

F4 · derivative.exercise_price: Each performance right represents a contingent right to receive one share of common stock of the Company. The number of securities reported in Table II, column 5 of this Form 4 represents the target payout of the award. The number of shares of common stock payable upon vesting of the award, which will occur on May 15, 2028, could range from 0% to 200% of target, if and to the extent that the Company's stock price reaches specified levels during the performance period ending on December 31, 2027.

F4 · derivative.exercise_date: Each performance right represents a contingent right to receive one share of common stock of the Company. The number of securities reported in Table II, column 5 of this Form 4 represents the target payout of the award. The number of shares of common stock payable upon vesting of the award, which will occur on May 15, 2028, could range from 0% to 200% of target, if and to the extent that the Company's stock price reaches specified levels during the performance period ending on December 31, 2027.

SEC source: 0000950170-25-073234 · ownership.xml · nonDerivative · entry 3

Anderson David George · CIK 0001905958 · President, Air & Liquid Systms

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,303

F3 · shares: Represents a grant of restricted stock units under the Ampco-Pittsburgh Corporation ("Company") 2016 Omnibus Incentive Plan, as amended and restated as of May 8, 2025. Each restricted stock unit represents the contingent right to receive upon vesting of the unit, one share of the Company's common stock. Restricted stock units vest in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0000950170-25-073234 · ownership.xml · nonDerivative · entry 2

Anderson David George · CIK 0001905958 · President, Air & Liquid Systms

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,303

F2 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2024 grant of Restricted Stock Units.

SEC source: 0000950170-25-073234 · ownership.xml · nonDerivative · entry 1

Anderson David George · CIK 0001905958 · President, Air & Liquid Systms

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,799

F1 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2023 grant of Restricted Stock Units.

SEC source: 0000950170-25-073231 · ownership.xml · derivative · entry 3

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,485

Underlying: Common Stock · 25,485 shares

Expires 2028-05-15

F3 · derivative.exercise_price: Each performance right represents a contingent right to receive one share of common stock of the Company. The number of securities reported in Table II, column 5 of this Form 4 represents the target payout of the award. The number of shares of common stock payable upon vesting of the award, which will occur on May 15, 2028, could range from 0% to 200% of target, if and to the extent that the Company's stock price reaches specified levels during the performance period ending on December 31, 2027.

F3 · derivative.exercise_date: Each performance right represents a contingent right to receive one share of common stock of the Company. The number of securities reported in Table II, column 5 of this Form 4 represents the target payout of the award. The number of shares of common stock payable upon vesting of the award, which will occur on May 15, 2028, could range from 0% to 200% of target, if and to the extent that the Company's stock price reaches specified levels during the performance period ending on December 31, 2027.

SEC source: 0000950170-25-073231 · ownership.xml · nonDerivative · entry 2

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,911

F2 · shares: Represents a grant of restricted stock units under the Ampco-Pittsburgh Corporation ("Company") 2016 Omnibus Incentive Plan, as amended and restated as of May 8, 2025. Each restricted stock unit represents the contingent right to receive upon vesting of the unit, one share of the Company's common stock. Restricted stock units vest in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0000950170-25-073231 · ownership.xml · nonDerivative · entry 1

Lyon Samuel · CIK 0001747181 · President of Union Electric

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,176

F1 · acquired: Represents the payment of tax liability by withholding shares incident to the vesting of the 2023 grant of Restricted Stock Units.

SEC source: 0000950170-25-073227 · ownership.xml · derivative · entry 4

McAuley Michael G · CIK 0001612993 · Senior V.P., CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,540

Underlying: Common Stock · 27,540 shares

Expires 2028-05-15

F4 · derivative.exercise_price: Each performance right represents a contingent right to receive one share of common stock of the Company. The number of securities reported in Table II, column 5 of this Form 4 represents the target payout of the award. The number of shares of common stock payable upon vesting of the award, which will occur on May 15, 2028, could range from 0% to 200% of target, if and to the extent that the Company's stock price reaches specified levels during the performance period ending on December 31, 2027.

F4 · derivative.exercise_date: Each performance right represents a contingent right to receive one share of common stock of the Company. The number of securities reported in Table II, column 5 of this Form 4 represents the target payout of the award. The number of shares of common stock payable upon vesting of the award, which will occur on May 15, 2028, could range from 0% to 200% of target, if and to the extent that the Company's stock price reaches specified levels during the performance period ending on December 31, 2027.

SEC source: 0000950170-25-073227 · ownership.xml · nonDerivative · entry 3

McAuley Michael G · CIK 0001612993 · Senior V.P., CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,765.635

F3 · shares: Represents a grant of restricted stock units under the Ampco-Pittsburgh Corporation ("Company") 2016 Omnibus Incentive Plan, as amended and restated as of May 8, 2025. Each restricted stock unit represents the contingent right to receive upon vesting of the unit, one share of the Company's common stock. Restricted stock units vest in three equal annual installments beginning on the first anniversary of the grant date.