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.
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.
Jeffrey Westphal files SEC Form 4 reports at Vertex, Inc. (VERX). 5 SEC Form 4 filings on record going back to 2024, most recently on 18 February 2026. Most recent open-market trade: bought $1.88M of VERX on 18 February 2026. Lifetime open-market purchases: $5.12M. Lifetime open-market sales: $200.29M.
Recent transactions
9
The latest 9 SEC Form 4 transactions reported by Jeffrey Westphal.
InsiderAlpha's records for Jeffrey Westphal go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $2.56M (2 buys totaling $5.12M). The largest single buy on record is $3.24M of VERX in 2026. Sales side: 3 recorded sales totaling $200.29M, so the filing history runs sell-heavy by dollar value. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
