Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Gwendolyn G. Mizell 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.
- Martin J. Lyons - $3.00M of AEE open-market activity in the last 12 months
- Michael L. Moehn - $2.78M of AEE open-market activity in the last 12 months
- William T. Bosway - $1.01M of ROCK open-market activity in the last 12 months
- Mark C. Lindgren - $585K of AEE open-market activity in the last 12 months
- Shawn E. Schukar - $556K of AEE open-market activity in the last 12 months
- James S. Metcalf - $502K of ROCK 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 Gwendolyn G. Mizell?
Gwendolyn G. Mizell is a corporate insider, tracked as Director of GIBRALTAR INDUSTRIES, INC. (ROCK). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Gwendolyn G. Mizell last file a Form 4?
The most recent primary Form 4 on record is dated 8 May 2026, one of 8 filings going back to 2024.
Has Gwendolyn G. Mizell been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($645K) across all tracked filings.
Where can I see all of Gwendolyn G. Mizell'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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