Summary
Updated Aug 30, 2026
Waleed H. Hassanein is President & CEO of TransMedics Group, Inc. (TMDX). 4 SEC Form 4 filings on record going back to 2024, most recently on 15 July 2026. Most recent open-market trade: bought $1.00M of TMDX on 18 November 2025. Lifetime open-market purchases: $2.98M. Lifetime open-market sales: $1.14M. Historical track record: 1/5 stars across 4 tracked purchases.
Recent Transactions
10Every recent SEC Form 4 transaction Waleed H. Hassanein has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★☆☆☆☆ (1/5) |
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 25% |
| 90-day win rate | 100% |
| Avg 5-day return | +14.19% |
| Avg 30-day return | -5.74% |
| Avg 90-day return | +8.84% |
| Best 30-day return | +7.52% |
Trading Pattern
InsiderAlpha's records for Waleed H. Hassanein go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. The typical open-market purchase is $746K (4 buys totaling $2.98M). The largest single buy on record is $1.00M of TMDX in 2025. Sales side: 4 recorded sales totaling $1.14M, so the filing history runs buy-heavy by dollar value. 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 Waleed H. Hassanein 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.
- Gerardo Hernandez - $1.25M of TMDX open-market activity in the last 12 months
- David Weill - $1.22M of TMDX open-market activity in the last 12 months
- Thomas J. Gunderson - $722K of TMDX open-market activity in the last 12 months
- Anil P. Ranganath - $556K of TMDX open-market activity in the last 12 months
- Edward M. Basile - $540K of TMDX open-market activity in the last 12 months
- Nicholas Corcoran - $413K of TMDX 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 Waleed H. Hassanein?
Waleed H. Hassanein is a corporate insider, tracked as President & CEO of TransMedics Group, Inc. (TMDX). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Waleed H. Hassanein submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Waleed H. Hassanein been buying or selling stock?
Recorded transactions: 4 open-market purchases ($2.98M) and 4 open-market sales ($1.14M) across all tracked filings.
How accurate is Waleed H. Hassanein's historical track record?
Across 4 tracked purchases, Waleed H. Hassanein averaged -5.7% avg 30-day return with a 25% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
Where can I see all of Waleed H. Hassanein'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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