Summary
Updated Aug 31, 2026
Ourania Tatsis is EVP, Chief Reg. & Quality Off. of VERTEX PHARMACEUTICALS INC / MA (VRTX). 10 SEC Form 4 filings on record going back to 2025, most recently on 23 July 2026. Most recent open-market trade: sold $787K of VRTX on 7 July 2026. Lifetime open-market sales: $4.38M.
Recent Transactions
15Every recent SEC Form 4 transaction Ourania Tatsis has reported, most recent first.
$VRTX VERTEX PHARMACEUTICALS INC / MAF - Tax withholding / forfeiture10b5-11.6K shares @ $485.11$789K
- $VRTX VERTEX PHARMACEUTICALS INC / MAF - Tax withholding / forfeiture10b5-1
2.3K shares @ $483.75$1.11M
- $VRTX VERTEX PHARMACEUTICALS INC / MAF - Tax withholding / forfeiture10b5-1
3.8K shares @ $487.76$1.86M
- $VRTX VERTEX PHARMACEUTICALS INC / MAF - Tax withholding / forfeiture10b5-1
2.1K shares @ $468.41$1.00M
Trading Pattern
InsiderAlpha's records for Ourania Tatsis go back to 2025: 10 primary Form 4 filings, an average of 5.0 per year. 12 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 Ourania Tatsis 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 Ourania Tatsis?
Ourania Tatsis is a corporate insider, tracked as EVP, Chief Reg. & Quality Off. of VERTEX PHARMACEUTICALS INC / MA (VRTX). InsiderAlpha holds 10 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 Ourania Tatsis submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Ourania Tatsis been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($4.38M) across all tracked filings.
Where can I see all of Ourania Tatsis'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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