Summary
Updated Aug 31, 2026
Kristen Ambrose is SVP & Chief Accounting Officer of VERTEX PHARMACEUTICALS INC / MA (VRTX). 6 SEC Form 4 filings on record, most recently on 2 March 2026. Most recent open-market trade: sold $173K of VRTX on 2 March 2026. Lifetime open-market sales: $1.98M.
Recent Transactions
12Every recent SEC Form 4 transaction Kristen Ambrose has reported, most recent first.
$VRTX VERTEX PHARMACEUTICALS INC / MAF - Tax withholding / forfeiture10b5-1546 shares @ $485.11$265K
- $VRTX VERTEX PHARMACEUTICALS INC / MAF - Tax withholding / forfeiture10b5-1
598 shares @ $483.75$289K
- $VRTX VERTEX PHARMACEUTICALS INC / MAF - Tax withholding / forfeiture10b5-1
592 shares @ $468.41$277K
Trading Pattern
InsiderAlpha's records for Kristen Ambrose go back to 2026: 6 primary Form 4 filings, an average of 6.0 per year. 9 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 Kristen Ambrose 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 M. Leiden - $60.94M of VRTX open-market activity in the last 12 months
- Amit Sachdev - $28.38M of VRTX open-market activity in the last 12 months
- Reshma Kewalramani - $19.74M of VRTX open-market activity in the last 12 months
- Carmen Bozic - $11.31M of VRTX open-market activity in the last 12 months
- Charles F. Wagner Jr. - $6.38M of VRTX open-market activity in the last 12 months
- Duncan McKechnie - $5.66M of VRTX 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 Kristen Ambrose?
Kristen Ambrose is a corporate insider, tracked as SVP & Chief Accounting Officer of VERTEX PHARMACEUTICALS INC / MA (VRTX). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Kristen Ambrose last file a Form 4?
The most recent primary Form 4 on record is dated 2 March 2026, one of 6 filings going back to 2026.
Has Kristen Ambrose been buying or selling stock?
Recorded transactions: 0 open-market purchases and 5 open-market sales ($1.98M) across all tracked filings.
Where can I see all of Kristen Ambrose'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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