United States Healthcare Equipment & Supplies

Transmedics Group Inc (TMDX)

Track

Over the past 90 days, Transmedics Group Inc. recorded two insider transactions, both involving sales totaling approximately $722,377. These transactions occurred against a backdrop of a 31.6% decline in stock price over the same period and a recent earnings report that missed expectations. No insider buying activity was reported during this timeframe.
Ticker: TMDX Exchange: NMS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Transmedics Group Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Gunderson Thomas J.
1 sale — total 722,377 USD
Sale 15 Jun 2026
Value US$4,962,607.99 | Price 401.83 | Shares 91,284
Proposed sale 15 Jun 2026
Value US$4,763,966.26 | Price 236.09 | Shares 51,753
Sale 4 Mar 2026
Value US$178,496.66 | Price 149.62 | Shares 1,193
Sale 4 Mar 2026
Value US$524,294.22 | Price 146.82 | Shares 3,571
Sale 4 Mar 2026
Value US$870,305.52 | Price 147.21 | Shares 5,912
Sale 4 Mar 2026
Value US$194,906.04 | Price 147.21 | Shares 1,324
Proposed sale 4 Mar 2026
Value US$1,065,182.62 | Price 147.21 | Shares 7,236
Proposed sale 4 Mar 2026
Value US$178,490.70 | Price 149.62 | Shares 1,193
Proposed sale 4 Mar 2026
Value US$524,294.58 | Price 146.82 | Shares 3,571
Sale 2 Mar 2026
Value US$52,170.00 | Price 139.12 | Shares 375
Sale 2 Mar 2026
Value US$412,629.92 | Price 139.12 | Shares 2,966
Sale 2 Mar 2026
Value US$120,199.68 | Price 139.12 | Shares 864
Sale 4 Dec 2025
Value US$128,450.40 | Price 139.62 | Shares 920
Sale 3 Dec 2025
Value US$693,200.00 | Price 138.64 | Shares 5,000
Proposed sale 3 Dec 2025
Value US$693,210.50 | Price 138.64 | Shares 5,000
Sale 25 Nov 2025
Value US$435,660.00 | Price 145.22 | Shares 3,000
Proposed sale 25 Nov 2025
Value US$435,673.80 | Price 145.22 | Shares 3,000
Buy 17 Nov 2025
Value US$1,000,350.00 | Price 114.00 | Shares 8,775
Planned sale 29 Oct 2025
Value US$540,323.90 | Price 130.45 | Shares 4,142
Proposed sale 29 Oct 2025
Value US$540,323.90 | Price 130.45 | Shares 4,142
Buy 7 Aug 2025
Value US$217,107.30 | Price 116.85 | Shares 1,858
Buy 7 Aug 2025
Value US$768,101.36 | Price 116.08 | Shares 6,617
Buy 6 Aug 2025
Value US$996,912.00 | Price 118.68 | Shares 8,400
Sale 4 Aug 2025
Value US$519,987.93 | Price 125.51 | Shares 4,143
Proposed sale 4 Aug 2025
Value US$519,987.93 | Price 125.51 | Shares 4,143
Sale 9 Jun 2025
Value US$95,902.80 | Price 139.80 | Shares 686
Sale 27 May 2025
Value US$632,250.00 | Price 126.45 | Shares 5,000
Proposed sale 27 May 2025
Value US$632,250.00 | Price 126.45 | Shares 5,000
Proposed sale 23 May 2025
Value US$90,682.65 | Price 123.88 | Shares 732
Sale 23 May 2025
Value US$90,680.16 | Price 123.88 | Shares 732
Sale 9 May 2025
Value US$693,780.00 | Price 115.63 | Shares 6,000
Proposed sale 9 May 2025
Value US$693,780.00 | Price 115.63 | Shares 6,000
Proposed sale 4 Mar 2025
Value US$389,854.62 | Price 65.61 | Shares 5,942
Sale 3 Mar 2025
Value US$183,967.01 | Price 76.43 | Shares 2,407
Planned sale 7 Jan 2025
Value US$86,694.15 | Price 80.05 | Shares 1,083
Planned sale 2 Dec 2024
Value US$93,657.60 | Price 86.40 | Shares 1,084
Planned sale 11 Nov 2024
Value US$131,278.32 | Price 90.04 | Shares 1,458
Planned sale 5 Nov 2024
Value US$122,572.20 | Price 84.30 | Shares 1,454
Planned sale 5 Nov 2024
Value US$441,421.60 | Price 83.35 | Shares 5,296
Proposed sale 5 Nov 2024
Value US$564,007.73 | Price 83.56 | Shares 6,750
Planned sale 1 Nov 2024
Value US$89,499.12 | Price 82.64 | Shares 1,083
Proposed sale 1 Nov 2024
Value US$625,021.00 | Price 81.97 | Shares 7,625
Planned sale 15 Oct 2024
Value US$40,512.00 | Price 135.04 | Shares 300
Planned sale 15 Oct 2024
Value US$161,076.00 | Price 134.23 | Shares 1,200
Planned sale 15 Oct 2024
Value US$467,260.76 | Price 132.82 | Shares 3,518
Planned sale 15 Oct 2024
Value US$475,799.37 | Price 131.91 | Shares 3,607
Planned sale 1 Oct 2024
Value US$20,751.24 | Price 154.86 | Shares 134
Planned sale 1 Oct 2024
Value US$3,075.00 | Price 153.75 | Shares 20
Planned sale 1 Oct 2024
Value US$12,182.40 | Price 152.28 | Shares 80
Planned sale 1 Oct 2024
Value US$12,096.00 | Price 151.20 | Shares 80
Planned sale 1 Oct 2024
Value US$47,820.84 | Price 150.38 | Shares 318
Planned sale 1 Oct 2024
Value US$78,235.57 | Price 149.59 | Shares 523
Planned sale 1 Oct 2024
Value US$11,838.40 | Price 147.98 | Shares 80
Planned sale 1 Oct 2024
Value US$132,210.00 | Price 146.90 | Shares 900
Planned sale 1 Oct 2024
Value US$120,281.45 | Price 146.15 | Shares 823
Planned sale 16 Sep 2024
Value US$97,956.48 | Price 156.48 | Shares 626
Planned sale 16 Sep 2024
Value US$107,087.20 | Price 155.65 | Shares 688
Planned sale 16 Sep 2024
Value US$213,203.28 | Price 154.16 | Shares 1,383
Planned sale 16 Sep 2024
Value US$483,724.60 | Price 153.32 | Shares 3,155
Planned sale 16 Sep 2024
Value US$284,039.50 | Price 152.30 | Shares 1,865
Planned sale 16 Sep 2024
Value US$137,198.80 | Price 151.10 | Shares 908
Planned sale 3 Sep 2024
Value US$16,587.00 | Price 165.87 | Shares 100
Planned sale 3 Sep 2024
Value US$5,269.76 | Price 164.68 | Shares 32
Planned sale 3 Sep 2024
Value US$13,047.20 | Price 163.09 | Shares 80
Planned sale 3 Sep 2024
Value US$113,078.00 | Price 161.54 | Shares 700
Planned sale 3 Sep 2024
Value US$63,625.32 | Price 160.67 | Shares 396
Planned sale 3 Sep 2024
Value US$20,990.64 | Price 159.02 | Shares 132
Planned sale 3 Sep 2024
Value US$145,600.89 | Price 158.09 | Shares 921
Planned sale 3 Sep 2024
Value US$94,204.73 | Price 157.27 | Shares 599
Sale 27 Aug 2024
Value US$1,760,200.00 | Price 176.02 | Shares 10,000
Proposed sale 27 Aug 2024
Value US$1,760,158.40 | Price 176.02 | Shares 10,000
Sale 22 Aug 2024
Value US$4,375,000.00 | Price 175.00 | Shares 25,000
Sale 21 Aug 2024
Value US$3,420,600.00 | Price 171.03 | Shares 20,000
Proposed sale 21 Aug 2024
Value US$7,795,000.00 | Price 173.22 | Shares 45,000
Planned sale 15 Aug 2024
Value US$35,231.30 | Price 171.86 | Shares 205
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-17 2026-06-15 S Sale
1.5
Gunderson Thomas J.
Non-Executive Director
91,284 +36.9%
401.83
US$4,962,608 		91,284 +36.9% 401.83 US$4,962,608
2026-06-15 2026-06-15 PrS Proposed sale
1.5
THOMAS GUNDERSON

Director

Non-Executive Director
51,753
236.09
US$4,763,966 		51,753 236.09 US$4,763,966
2026-03-06 2026-03-04 S Sale
2.5
Lovell Stephanie
Non-Executive Director
73,616 -9.0%
194.87
US$578,414 		73,616 -9.0% 194.87 US$578,414
2026-03-06 2026-03-04 S Sale
3.0
Weill David
Non-Executive Director
3,571 -22.7%
146.82
US$524,294 		3,571 -22.7% 146.82 US$524,294
2026-03-04 2026-03-04 S Sale
3.8
Hernandez Gerardo

Chief Financial Officer

Officer
5,912 -28.7%
147.21
US$870,306 		5,912 -28.7% 147.21 US$870,306
2026-03-04 2026-03-04 S Sale
3.8
Hernandez Gerardo

Chief Financial Officer

Officer
1,324 -8.3%
147.21
US$194,906 		1,324 -8.3% 147.21 US$194,906
2026-03-04 2026-03-04 PrS Proposed sale
3.8
GERARDO P HERNANDEZ

Officer

Officer
7,236
147.21
US$1,065,183 		7,236 147.21 US$1,065,183
2026-03-04 2026-03-04 PrS Proposed sale
2.5
STEPHANIE LOVELL

Director

Non-Executive Director
1,193
149.62
US$178,491 		1,193 149.62 US$178,491
2026-03-04 2026-03-04 PrS Proposed sale
3.0
DAVID WEILL

Director

Non-Executive Director
3,571
146.82
US$524,295 		3,571 146.82 US$524,295
2026-03-04 2026-03-02 S Sale
3.8
Hernandez Gerardo

Chief Financial Officer

Officer
375 -2.5%
139.12
US$52,170 		375 -2.5% 139.12 US$52,170
2026-03-04 2026-03-02 S Sale
3.7
Corcoran Nicholas

See remarks

Officer
2,966 -9.0%
139.12
US$412,630 		2,966 -9.0% 139.12 US$412,630
2026-03-04 2026-03-02 S Sale
3.8
Ranganath Anil P.

See remarks

Officer
864 -6.2%
139.12
US$120,200 		864 -6.2% 139.12 US$120,200
2025-12-05 2025-12-04 S Sale
3.8
Hernandez Gerardo

Chief Financial Officer

Officer
920 -5.8%
139.62
US$128,450 		920 -5.8% 139.62 US$128,450
2025-12-05 2025-12-03 S Sale
3.0
Weill David
Non-Executive Director
5,000 -29.2%
138.64
US$693,200 		5,000 -29.2% 138.64 US$693,200
2025-12-03 2025-12-03 PrS Proposed sale
3.0
DAVID WEILL

Director

Non-Executive Director
5,000
138.64
US$693,210 		5,000 138.64 US$693,210
2025-11-26 2025-11-25 S Sale
3.8
Ranganath Anil P.

See remarks

Officer
3,000 -17.7%
145.22
US$435,660 		3,000 -17.7% 145.22 US$435,660
2025-11-25 2025-11-25 PrS Proposed sale
3.8
ANIL P RANGANATH

Officer

Officer
3,000
145.22
US$435,674 		3,000 145.22 US$435,674
2025-11-18 2025-11-17 B Purchase
3.7
Hassanein Waleed H

President & CEO

Executive Director
8,775 +1.8%
114.00
US$1,000,350 		8,775 +1.8% 114.00 US$1,000,350
2025-10-31 2025-10-29 PlS Planned sale
2.9
Basile Edward M
Non-Executive Director
4,142 -59.1%
130.45
US$540,324 		4,142 -59.1% 130.45 US$540,324
2025-10-29 2025-10-29 PrS Proposed sale
2.9
EDWARD BASILE

Director

Non-Executive Director
4,142
130.45
US$540,324 		4,142 130.45 US$540,324
2025-08-08 2025-08-07 B Purchase
3.7
Hassanein Waleed H

President & CEO

Executive Director
1,858 +0.4%
116.85
US$217,107 		1,858 +0.4% 116.85 US$217,107
2025-08-08 2025-08-07 B Purchase
3.7
Hassanein Waleed H

President & CEO

Executive Director
6,617 +1.4%
116.08
US$768,101 		6,617 +1.4% 116.08 US$768,101
2025-08-08 2025-08-06 B Purchase
3.7
Hassanein Waleed H

President & CEO

Executive Director
8,400 +1.8%
118.68
US$996,912 		8,400 +1.8% 118.68 US$996,912
2025-08-05 2025-08-04 S Sale
2.9
Basile Edward M
Non-Executive Director
4,143 -59.1%
125.51
US$519,988 		4,143 -59.1% 125.51 US$519,988
2025-08-04 2025-08-04 PrS Proposed sale
2.9
EDWARD BASILE

Director

Non-Executive Director
4,143
125.51
US$519,988 		4,143 125.51 US$519,988
2025-06-10 2025-06-09 S Sale
3.8
Ranganath Anil P.

See remarks

Officer
686 -4.7%
139.80
US$95,903 		686 -4.7% 139.80 US$95,903
2025-05-29 2025-05-27 S Sale
2.9
Basile Edward M
Non-Executive Director
5,000 -63.6%
126.45
US$632,250 		5,000 -63.6% 126.45 US$632,250
2025-05-27 2025-05-27 PrS Proposed sale
2.9
EDWARD BASILE

Director

Non-Executive Director
5,000
126.45
US$632,250 		5,000 126.45 US$632,250
2025-05-23 2025-05-23 PrS Proposed sale
3.0
DAVID WEILL

Director

Non-Executive Director
732
123.88
US$90,683 		732 123.88 US$90,683
2025-05-23 2025-05-23 S Sale
3.0
Weill David
Non-Executive Director
732 -5.7%
123.88
US$90,680 		732 -5.7% 123.88 US$90,680
2025-05-13 2025-05-09 S Sale
2.9
Basile Edward M
Non-Executive Director
6,000 -89.1%
115.63
US$693,780 		6,000 -89.1% 115.63 US$693,780
2025-05-09 2025-05-09 PrS Proposed sale
2.9
EDWARD BASILE

Director

Non-Executive Director
6,000
115.63
US$693,780 		6,000 115.63 US$693,780
2025-03-04 2025-03-04 PrS Proposed sale
1.2
Gordon Stephen

Officer

Officer
5,942
65.61
US$389,855 		5,942 65.61 US$389,855
2025-03-05 2025-03-03 S Sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
2,407 -6.3%
76.43
US$183,967 		2,407 -6.3% 76.43 US$183,967
2025-01-10 2025-01-07 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
1,083 -4.9%
80.05
US$86,694 		1,083 -4.9% 80.05 US$86,694
2024-12-04 2024-12-02 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
1,084 -4.9%
86.40
US$93,658 		1,084 -4.9% 86.40 US$93,658
2024-11-13 2024-11-11 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
1,458 -6.5%
90.04
US$131,278 		1,458 -6.5% 90.04 US$131,278
2024-11-07 2024-11-05 PlS Planned sale
2.9
Basile Edward M
Non-Executive Director
1,454 -66.5%
84.30
US$122,572 		1,454 -66.5% 84.30 US$122,572
2024-11-07 2024-11-05 PlS Planned sale
2.9
Basile Edward M
Non-Executive Director
5,296 -70.8%
83.35
US$441,422 		5,296 -70.8% 83.35 US$441,422
2024-11-05 2024-11-05 PrS Proposed sale
2.9
EDWARD BASILE

Director

Non-Executive Director
6,750
83.56
US$564,008 		6,750 83.56 US$564,008
2024-11-05 2024-11-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
1,083 -4.9%
82.64
US$89,499 		1,083 -4.9% 82.64 US$89,499
2024-11-01 2024-11-01 PrS Proposed sale
2.3
Tamer Khayal

Officer

Officer
7,625
81.97
US$625,021 		7,625 81.97 US$625,021
2024-10-17 2024-10-15 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
300 -0.5%
135.04
US$40,512 		300 -0.5% 135.04 US$40,512
2024-10-17 2024-10-15 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
1,200 -1.9%
134.23
US$161,076 		1,200 -1.9% 134.23 US$161,076
2024-10-17 2024-10-15 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
3,518 -5.3%
132.82
US$467,261 		3,518 -5.3% 132.82 US$467,261
2024-10-17 2024-10-15 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
3,607 -5.1%
131.91
US$475,799 		3,607 -5.1% 131.91 US$475,799
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
134 -0.6%
154.86
US$20,751 		134 -0.6% 154.86 US$20,751
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
20 -0.1%
153.75
US$3,075 		20 -0.1% 153.75 US$3,075
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
80 -0.4%
152.28
US$12,182 		80 -0.4% 152.28 US$12,182
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
80 -0.4%
151.20
US$12,096 		80 -0.4% 151.20 US$12,096
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
318 -1.5%
150.38
US$47,821 		318 -1.5% 150.38 US$47,821
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
523 -2.4%
149.59
US$78,236 		523 -2.4% 149.59 US$78,236
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
80 -0.4%
147.98
US$11,838 		80 -0.4% 147.98 US$11,838
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
900 -3.9%
146.90
US$132,210 		900 -3.9% 146.90 US$132,210
2024-10-03 2024-10-01 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
823 -3.5%
146.15
US$120,281 		823 -3.5% 146.15 US$120,281
2024-09-17 2024-09-16 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
626 -1.0%
156.48
US$97,956 		626 -1.0% 156.48 US$97,956
2024-09-17 2024-09-16 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
688 -1.1%
155.65
US$107,087 		688 -1.1% 155.65 US$107,087
2024-09-17 2024-09-16 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
1,383 -2.1%
154.16
US$213,203 		1,383 -2.1% 154.16 US$213,203
2024-09-17 2024-09-16 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
3,155 -4.7%
153.32
US$483,725 		3,155 -4.7% 153.32 US$483,725
2024-09-17 2024-09-16 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
1,865 -2.7%
152.30
US$284,040 		1,865 -2.7% 152.30 US$284,040
2024-09-17 2024-09-16 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
908 -1.3%
151.10
US$137,199 		908 -1.3% 151.10 US$137,199
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
100 -0.5%
165.87
US$16,587 		100 -0.5% 165.87 US$16,587
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
32 -0.2%
164.68
US$5,270 		32 -0.2% 164.68 US$5,270
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
80 -0.4%
163.09
US$13,047 		80 -0.4% 163.09 US$13,047
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
700 -3.2%
161.54
US$113,078 		700 -3.2% 161.54 US$113,078
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
396 -1.8%
160.67
US$63,625 		396 -1.8% 160.67 US$63,625
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
132 -0.6%
159.02
US$20,991 		132 -0.6% 159.02 US$20,991
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
921 -4.0%
158.09
US$145,601 		921 -4.0% 158.09 US$145,601
2024-09-05 2024-09-03 PlS Planned sale
2.3
Khayal Tamer I

Chief Commercial Officer

Officer
599 -2.5%
157.27
US$94,205 		599 -2.5% 157.27 US$94,205
2024-08-29 2024-08-27 S Sale
3.7
Corcoran Nicholas

See Remarks

Officer
10,000 -32.1%
176.02
US$1,760,200 		10,000 -32.1% 176.02 US$1,760,200
2024-08-27 2024-08-27 PrS Proposed sale
3.7
Corcoran Nicholas

Officer

Officer
10,000
176.02
US$1,760,158 		10,000 176.02 US$1,760,158
2024-08-23 2024-08-22 S Sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
25,000 -28.9%
175.00
US$4,375,000 		25,000 -28.9% 175.00 US$4,375,000
2024-08-23 2024-08-21 S Sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
20,000 -24.5%
171.03
US$3,420,600 		20,000 -24.5% 171.03 US$3,420,600
2024-08-21 2024-08-21 PrS Proposed sale
3.7
Hassanein Waleed H

Officer

Officer
45,000
173.22
US$7,795,000 		45,000 173.22 US$7,795,000
2024-08-19 2024-08-15 PlS Planned sale
3.7
Hassanein Waleed H

President & CEO

Executive Director
205 -0.3%
171.86
US$35,231 		205 -0.3% 171.86 US$35,231
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