Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Michael A. Lewis 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.
- Gregg Piontek - $2.49M of NPKI open-market activity in the last 12 months
- Matthew Lanigan - $2.43M of NPKI open-market activity in the last 12 months
- Maria M. Pope - $803K of POR open-market activity in the last 12 months
- Lori Briggs - $391K of NPKI open-market activity in the last 12 months
- Joseph R. Trpik Jr. - $368K of POR open-market activity in the last 12 months
- Benjamin Felton - $266K of POR 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 Michael A. Lewis?
Michael A. Lewis is a corporate insider, tracked as Director of NPK International Inc. (NPKI). InsiderAlpha holds 9 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Michael A. Lewis submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Michael A. Lewis been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($291K) across all tracked filings.
Where can I see all of Michael A. Lewis'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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