Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Jeffrey Westphal 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.
- Christopher David Young - $731K of VERX open-market activity in the last 12 months
- Eric C. Andersen - $516K of VERX open-market activity in the last 12 months
- ITEM SECOND IRR. TRUST FBO KYLE R. WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001 - $150K of VERX open-market activity in the last 12 months
- David Destefano - $82K of VERX 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 Jeffrey Westphal?
Jeffrey Westphal is a corporate insider of Vertex, Inc. (VERX). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Jeffrey Westphal last file a Form 4?
The most recent primary Form 4 on record is dated 18 February 2026, one of 5 filings going back to 2024.
Has Jeffrey Westphal been buying or selling stock?
Recorded transactions: 2 open-market purchases ($5.12M) and 3 open-market sales ($200.29M) across all tracked filings.
Where can I see all of Jeffrey Westphal'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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