Waleed H. Hassanein is CEO & President at TransMedics Group, Inc. (TMDX). They have made 27 open-market trades across 1 company since 2021, most recently 2026-07-10.
CIK 0001430466
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $4.0M since 2025, against 25 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TMDX | 171,093 | $12.1M |
Shares reported on the most recent Form 4, priced at the 2026-07-14 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TMDX | BUY | 2025-11-17 | 2025-11-18 | $114.00 | $1.0M | +24.7% | +0.3% | +10.9% |
| TMDX | BUY | 2025-08-06 | 2025-08-08 | $117.05 | $3.0M | -3.2% | -16.2% | -0.8% |
| TMDX | SELL · 10b5-1 | 2024-10-15 | 2024-10-17 | $132.55 | $2.1M | -30.5% | -36.4% | -52.5% |
| TMDX | SELL · 10b5-1 | 2024-09-16 | 2024-09-17 | $153.42 | $2.6M | +3.1% | -17.6% | -58.4% |
| TMDX | SELL | 2024-08-21 | 2024-08-23 | $173.24 | $7.8M | -18.5% | -9.4% | -54.9% |
| TMDX | SELL · 10b5-1 | 2024-08-15 | 2024-08-19 | $169.95 | $2.6M | +2.0% | -4.6% | -50.5% |
| TMDX | SELL · 10b5-1 | 2024-07-15 | 2024-07-17 | $145.13 | $2.5M | -6.7% | +14.3% | -11.5% |
| TMDX | SELL · 10b5-1 | 2024-06-14 | 2024-06-17 | $141.62 | $2.0M | +6.6% | +5.7% | +7.1% |
| TMDX | SELL · 10b5-1 | 2024-05-15 | 2024-05-17 | $135.45 | $2.0M | -1.1% | +3.7% | +23.2% |
| TMDX | SELL · 10b5-1 | 2024-05-06 | 2024-05-08 | $130.07 | $3.9M | +8.6% | +7.5% | +22.3% |
| TMDX | SELL · 10b5-1 | 2024-05-01 | 2024-05-03 | $117.02 | $9.8M | +6.4% | +4.4% | +18.4% |
| TMDX | SELL · 10b5-1 | 2024-04-17 | 2024-04-18 | $95.12 | $380K | +8.6% | +59.9% | +72.2% |
| TMDX | SELL · 10b5-1 | 2024-04-10 | 2024-04-12 | $95.09 | $1.1M | -3.7% | +43.1% | +56.0% |
| TMDX | SELL | 2023-12-01 | 2023-12-05 | $74.40 | $1.1M | +4.7% | +1.4% | +17.5% |
| TMDX | SELL | 2023-11-07 | 2023-11-09 | $64.32 | $1.9M | +16.1% | +23.0% | +50.7% |
| TMDX | SELL | 2023-09-01 | 2023-09-06 | $68.27 | $1.0M | -8.5% | -19.5% | +13.7% |
| TMDX | SELL | 2023-08-01 | 2023-08-03 | $93.13 | $969K | -17.7% | -16.2% | -50.3% |
| TMDX | SELL | 2023-07-03 | 2023-07-06 | $82.47 | $1.2M | +17.5% | -16.2% | -35.8% |
| TMDX | SELL | 2023-06-01 | 2023-06-05 | $71.64 | $1.1M | +6.9% | +9.9% | -13.9% |
| TMDX | SELL | 2023-05-01 | 2023-05-02 | $78.09 | $1.1M | +2.1% | -2.5% | +25.7% |
| TMDX | SELL | 2023-04-03 | 2023-04-04 | $74.79 | $1.1M | -9.2% | -4.3% | +7.7% |
| TMDX | SELL | 2023-03-01 | 2023-03-02 | $80.72 | $605K | -5.2% | -6.1% | -9.3% |
| TMDX | SELL | 2023-02-23 | 2023-02-27 | $73.47 | $3.6M | -0.9% | -5.6% | -7.3% |
| TMDX | SELL | 2023-02-14 | 2023-02-16 | $70.08 | $305K | +23.9% | +14.3% | +14.8% |
| TMDX | SELL | 2023-02-01 | 2023-02-03 | $64.21 | $963K | -2.4% | +17.3% | +6.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.