Summary
Updated Aug 31, 2026
Leon J. Topalian is Chair and CEO of NUCOR CORP (NUE). 14 SEC Form 4 filings on record going back to 2024, most recently on 19 August 2026. Most recent open-market trade: sold $27K of NUE on 19 August 2026. Lifetime open-market sales: $27.61M.
Recent Transactions
20Every recent SEC Form 4 transaction Leon J. Topalian has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Leon J. Topalian go back to 2024: 14 primary Form 4 filings, an average of 4.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Leon J. Topalian 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.
- Vincent J. Morales - $14.51M of PPG open-market activity in the last 12 months
- Allen C. Behr - $9.50M of NUE open-market activity in the last 12 months
- David A. Sumoski - $7.46M of NUE open-market activity in the last 12 months
- John J. Hollatz - $3.78M of NUE open-market activity in the last 12 months
- Daniel R. Needham - $3.60M of NUE open-market activity in the last 12 months
- Noah C. Hanners - $1.47M of NUE 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
Who is Leon J. Topalian?
Leon J. Topalian is a corporate insider, tracked as Chair and CEO of NUCOR CORP (NUE). InsiderAlpha holds 14 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Leon J. Topalian submitted recently?
3 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Leon J. Topalian been buying or selling stock?
Recorded transactions: 0 open-market purchases and 14 open-market sales ($27.61M) across all tracked filings.
Where can I see all of Leon J. Topalian'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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