Summary
Updated Aug 31, 2026
Kathryn G. Simpson is Corp VP & General Counsel of NORTHROP GRUMMAN CORP /DE/ (NOC). 4 SEC Form 4 filings on record, most recently on 3 March 2026. Most recent open-market trade: sold $650K of NOC on 3 March 2026. Lifetime open-market sales: $1.34M.
Recent Transactions
7Every recent SEC Form 4 transaction Kathryn G. Simpson has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Kathryn G. Simpson go back to 2026: 4 primary Form 4 filings, an average of 4.0 per year. 6 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Kathryn G. Simpson 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.
- Kathy J. Warden - $14.18M of NOC open-market activity in the last 12 months
- Roshan S. Roeder - $1.86M of NOC open-market activity in the last 12 months
- Benjamin R. Davies - $1.58M of NOC open-market activity in the last 12 months
- Michael A. Hardesty - $1.16M of NOC open-market activity in the last 12 months
- Mark A. Welsh III - $226K of NOC 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 Kathryn G. Simpson?
Kathryn G. Simpson is a corporate insider, tracked as Corp VP & General Counsel of NORTHROP GRUMMAN CORP /DE/ (NOC). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Kathryn G. Simpson last file a Form 4?
The most recent primary Form 4 on record is dated 3 March 2026, one of 4 filings going back to 2026.
Has Kathryn G. Simpson been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($1.34M) across all tracked filings.
Where can I see all of Kathryn G. Simpson'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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