William K. Lieberman - 15 May 2026 Form 4 Insider Report for AMPCO PITTSBURGH CORP (AP)

Reporting relationship: Director
Issuer ticker: AP
Reported as of: 15 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 May 2026, 11:21:38 UTC
Prior SEC filing: 15 May 2025
Source filing: View source filing
Reporting owner signature: Kimberly P. Knox, attorney-in-fact

Key filing fact

William K. Lieberman filed Form 4 for AMPCO PITTSBURGH CORP (AP) on 18 May 2026.

Key facts

This page summarizes William K. Lieberman's Form 4 filing for AMPCO PITTSBURGH CORP (AP).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 May 2026, 11:21.

Change

Previous filing in this sequence was filed on 15 May 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001279916 Primary reporting owner

LIEBERMAN WILLIAM K

Relationship: Director
Address: 726 BELL AVENUE, SUITE 301, CARNEGIE
Signature: Kimberly P. Knox, attorney-in-fact
Signature date: 18 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AP transaction

Common Stock

Award

Transaction value
Shares: +7,374
Change %: +14%
Price: $0.000000^*
Shares after: 58,286
Date: 15 May 2026
Ownership: Direct
Footnotes: F1

AP holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 25,000
Date: 15 May 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

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.

Footnote F2

Joint with spouse