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Buy TMDX
TransMedics Group Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be positive at 3.13. In total, the insiders bought 717.43K and sold 76.49K TMDX shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
3.13 |
| ● Buy | 717.43K shares |
| ● Sell | 76.49K shares |
|
76% Buy Activity
Negligible or No Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jun 15, 2026 Sell |
Gunderson Thomas J. Director |
9 624 Value: $722.4K |
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|
Jun 15, 2026 Buy |
Gunderson Thomas J. Director |
19 285 Value: $42.6K |
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Jun 15, 2026 Buy |
Gunderson Thomas J. Director |
19 285 Value: $42.6K |
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May 20, 2026 Buy |
Tobin James R Director |
2 922 Value: $198.7K |
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May 20, 2026 Buy |
Basile Edward M Director |
2 922 Value: $198.7K |
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May 20, 2026 Buy |
Weill David Director |
2 922 Value: $198.7K |
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|
May 20, 2026 Buy |
Lovell Stephanie Director |
2 922 Value: $198.7K |
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May 20, 2026 Buy |
Raines Merilee Director |
2 922 Value: $198.7K |
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|
May 20, 2026 Buy |
Gunderson Thomas J. Director |
2 922 Value: $198.7K |
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|
May 20, 2026 Buy |
Kania Edwin Director |
2 922 Value: $198.7K |
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May 19, 2026 Buy |
Forsyth Matthew S. See Remarks |
15 409 Value: $1.02M |
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May 19, 2026 Buy |
Forsyth Matthew S. See Remarks |
23 171 Value: $1.53M |
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Mar 09, 2026 Buy |
Forsyth Matthew S. Insider |
0 Value: $0 |
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Mar 04, 2026 Sell |
Weill David Director |
3 571 Value: $524.3K |
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|
Mar 04, 2026 Sell |
Lovell Stephanie Director |
1 193 Value: $178.5K |
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|
Mar 04, 2026 Buy |
Weill David Director |
3 571 Value: $50.7K |
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|
Mar 04, 2026 Buy |
Weill David Director |
3 571 Value: $50.7K |
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Mar 04, 2026 Buy |
Hernandez Gerardo Chief Financial Officer |
1 324 Value: $102.1K |
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Mar 04, 2026 Sell |
Hernandez Gerardo Chief Financial Officer |
5 912 Value: $870.3K |
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Mar 04, 2026 Buy |
Hernandez Gerardo Chief Financial Officer |
5 912 Value: $412.9K |
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Mar 04, 2026 Buy |
Hernandez Gerardo Chief Financial Officer |
1 324 Value: $102.1K |
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|
Mar 04, 2026 Buy |
Hernandez Gerardo Chief Financial Officer |
5 912 Value: $412.9K |
||
|
Mar 02, 2026 Sell |
Corcoran Nicholas See Remarks |
2 966 Value: $412.6K |
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|
Mar 02, 2026 Sell |
Hernandez Gerardo Chief Financial Officer |
375 Value: $52.2K |
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|
Mar 02, 2026 Sell |
Ranganath Anil P. See Remarks |
864 Value: $120.2K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
