Summary
Updated Aug 30, 2026
Louis Berkman Investment CO files SEC Form 4 reports at AMPCO PITTSBURGH CORP (AP). 1 SEC Form 4 filing on record, dated 26 November 2025. Most recent open-market trade: bought $248K of AP on 26 November 2025. Lifetime open-market purchases: $248K.
Recent Transactions
1Every recent SEC Form 4 transaction Louis Berkman Investment CO has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Louis Berkman Investment CO files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Brett McBrayer - $129K of AP open-market activity in the last 12 months
- Michael I. German - $106K of AP open-market activity in the last 12 months
- Samuel Lyon - $99K of AP open-market activity in the last 12 months
- Darrell L. McNair - $34K of AP open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is Louis Berkman Investment CO?
Louis Berkman Investment CO is an investment firm of AMPCO PITTSBURGH CORP (AP). InsiderAlpha holds 1 primary Form 4 filing for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Louis Berkman Investment CO last file a Form 4?
The only primary Form 4 on record is dated 26 November 2025.
Has Louis Berkman Investment CO been buying or selling stock?
Recorded transactions: 1 open-market purchase ($248K) and 0 open-market sales across all tracked filings.
Where can I see all of Louis Berkman Investment CO's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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