$TMDX
TransMedics Group, Inc. Common Stock
XNAS•Health Care•Electromedical & Electrotherapeutic Apparatus
Why is TMDX down today? It is at $75.47 (-6.54%), and our scanner flagged it 55 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment TMDX spikes, and full due diligence on TMDX — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $75.47
- Change today
- -6.54%
- Previous close
- $80.75
- 52-week range
- $60.10 – $156.00
- Market cap
- $2.65B
- Institutional own.
- 99.9%
- Total held
- 100.0%
- Short interest
- 7.7M ▼ -2% vs prior · as of 2026-07-15
- Days to cover
- 9.5d
- Avg daily volume
- 1.0M
- Sector
- Health Care
- Industry
- Electromedical & Electrotherapeutic Apparatus
- Exchange
- XNAS
- 5mthin
- 3.0x
- 15mthin
- 3.0x
- 1hthin
- 1.0x
- 1D
- 1.5x
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Why is $TMDX down today?
Here is the latest on TMDX from our scanner (live price and day move above). Fresh from the SEC: TransMedics Group, Inc. filed a Quarterly report (10-Q). A material company disclosure like this is often the real catalyst behind a move of this size.
Likely catalystQuarterly report (10-Q), from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
Insiders buying11 buys, 1 sells last 3 months (15/12 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Hassanein Waleed H Officer | Acquired (grant/award) | +50K 0.1% of company | added 41% | 171K | n/a | Jul 10, 26 |
Hernandez Gerardo Officer | Acquired (grant/award) | +17K 0.05% of company | added 100% | 32K | n/a | Jul 10, 26 |
Corcoran Nicholas Officer | Acquired (grant/award) | +12K 0.03% of company | added 39% | 42K | n/a | Jul 10, 26 |
Gunderson Thomas J. Director | Sold (automatic/other) | -10K 0.03% of company | sold 37% | 17K | $722K at $75.06 | Jun 15, 26 |
Gunderson Thomas J. Director | Other | 19K 0.06% of company | added 100% | 26K | $43K at $2.21 | Jun 15, 26 |
Kania Edwin Director | Acquired (grant/award) | +3K | added 1.1% | 264K | n/a | May 20, 26 |
Tobin James R Director | Acquired (grant/award) | +3K | added 72% | 7K | n/a | May 20, 26 |
Basile Edward M Director | Acquired (grant/award) | +3K | added 100% | 6K | n/a | May 20, 26 |
Gunderson Thomas J. Director | Acquired (grant/award) | +3K | added 72% | 7K | n/a | May 20, 26 |
Raines Merilee Director | Acquired (grant/award) | +3K | added 72% | 7K | n/a | May 20, 26 |
Weill David Director | Acquired (grant/award) | +3K | added 24% | 15K | n/a | May 20, 26 |
Lovell Stephanie Director | Acquired (grant/award) | +3K | added 100% | 6K | n/a | May 20, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$TMDX Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$TMDX Activity
News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.
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TMDX stock FAQ
Why is $TMDX down today?
Here is the latest on TMDX from our scanner (live price and day move above). Fresh from the SEC: TransMedics Group, Inc. filed a Quarterly report (10-Q). A material company disclosure like this is often the real catalyst behind a move of this size.
What is the TMDX stock price today?
TMDX last traded at $75.47, down 6.54% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live TMDX alerts?
The TMDX Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged TMDX 55 times in the last 30 days.
What exchange is TMDX on?
TMDX (TransMedics Group, Inc. Common Stock) trades on XNAS, with a market cap of about $2.65B in the ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS sector.
Is TMDX good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge TMDX for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.