Summary
Updated Aug 30, 2026
Robert J. Cardin is SVP, Controller & CAO of MARTIN MARIETTA MATERIALS INC (MLM). 4 SEC Form 4 filings on record going back to 2025, most recently on 25 February 2026.
Recent Transactions
6Every recent SEC Form 4 transaction Robert J. Cardin has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who have reported open-market trades at the same companies as Robert J. Cardin. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Laree E. Perez - $637K of MLM open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Robert J. Cardin?
Robert J. Cardin is a corporate insider, tracked as SVP, Controller & CAO of MARTIN MARIETTA MATERIALS INC (MLM). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Robert J. Cardin last file a Form 4?
The most recent primary Form 4 on record is dated 25 February 2026, one of 4 filings going back to 2025.
Where can I see all of Robert J. Cardin'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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