Insider · CIK 0001774270
David Weill
Files at TMDX (TransMedics Group, Inc.). First filing May 23, 2025, latest Sep 14, 2026.
In brief
David Weill files SEC Form 4 as director at TMDX (TransMedics Group, Inc.). Since May 23, 2025, David Weill has reported 1 open-market buy worth $109k and 3 open-market sells worth $1.3M, the latest filed on Sep 14, 2026.
A track record needs three past buys with six months of prices behind them; David Weill has 0, so none is measured yet.
The newest scored trade: bought $109k of TMDX on Sep 11, 2026, filed Sep 14, 2026, scored 36 (weak). In the last 12 months: 1 buy worth $109k and 2 sells worth $1.2M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
TMDX: TransMedics Group, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 36Weak | TMDXbuy TransMedics Group, Inc. | $109k 1,336 shares | +9% | +32% from low-45% from high | |
| 38Weak | TransMedics Group, Inc. | $524k 3,571 shares | -23% | +129% from low-2% from high | |
| 46Moderate | TransMedics Group, Inc. | $693k 5,000 shares | -29% | +147% from low-7% from high | |
| 32Weak | TransMedics Group, Inc. | $91k 732 shares | -6% | +119% from low-25% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Mar 4, 2026 | TMDX TRANSMEDICS GROUP, INC. | 3,571 0.01% of outstanding | $524k | Mar 4, 2026 | none |
| Dec 3, 2025 | TMDX TRANSMEDICS GROUP, INC. | 5,000 0.01% of outstanding | $693k | Dec 3, 2025 | none |
| May 23, 2025 | TMDX TRANSMEDICS GROUP, INC. | 732 0.00% of outstanding | $91k | May 23, 2025 | none |
Transactions
Every row this insider has filed, 10 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | TMDX TransMedics Group, Inc. | POpen-market purchase Common Stock | +1,336 | $81.63 | $109k | 16,392 | 29 d ago |
| May 20, 2026 | TMDX TransMedics Group, Inc. | AGrant or award Common Stock | +2,922 | $0.00 | $0 | 15,056 | May 22, 2026 |
| Mar 4, 2026 | TMDX TransMedics Group, Inc. | MOption exercise Common Stock | +3,571 | $14.20 | $51k | 15,705 | Mar 6, 2026 |
| Mar 4, 2026 | TMDX TransMedics Group, Inc. | SOpen-market sale Common Stock | -3,571 | $146.82 | $524k | 12,134 | Mar 6, 2026 |
| Mar 4, 2026 | TMDX TransMedics Group, Inc. | MOption exercise Stock Option (Right to Buy)derivative | -3,571 | $0.00 | $0 | 1,429 | Mar 6, 2026 |
| Dec 3, 2025 | TMDX TransMedics Group, Inc. | MOption exercise Common Stock | +5,000 | $14.20 | $71k | 17,134 | Dec 5, 2025 |
| Dec 3, 2025 | TMDX TransMedics Group, Inc. | SOpen-market sale Common Stock | -5,000 | $138.64 | $693k | 12,134 | Dec 5, 2025 |
| Dec 3, 2025 | TMDX TransMedics Group, Inc. | MOption exercise Stock Option (Right to Buy)derivative | -5,000 | $0.00 | $0 | 5,000 | Dec 5, 2025 |
| May 22, 2025 | TMDX TransMedics Group, Inc. | AGrant or award Common Stock | +2,134 | $0.00 | $0 | 12,866 | May 23, 2025 |
| May 23, 2025 | TMDX TransMedics Group, Inc. | SOpen-market sale Common Stock | -732 | $123.88 | $91k | 12,134 | May 23, 2025 |
Questions about David Weill
Answered from the filings on this page, as of the latest one.
Is David Weill buying or selling?
In the last 12 months David Weill reported 1 open-market buy worth $109k and 2 open-market sells worth $1.2M on SEC Form 4; the latest was bought $109k of TMDX on Sep 11, 2026. Grants, option exercises and tax withholding are not counted.
How did David Weill's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and David Weill has 0.
Where does David Weill file Form 4?
David Weill has filed Form 4 at TMDX (TransMedics Group, Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.