TMDX
TRANSMEDICS GRP (TMDX)
NASDAQ
$78.82+$0.18 (+0.22%)
Price as of Oct 02, 2026 5:59 PM EDT
  • $2.7B
    Market Cap
  • -32.25%
    1-Year Change
  • Medical Devices
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
16.19%
5.6M
+303,218 (+5.42%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
15.13%
5.2M
-79,572 (-1.52%)
Dec 31, 2024
FMR LLC
14.85%
5.1M
+37,085 (+0.72%)
Jun 30, 2026
VANGUARD GROUP INC
10.43%
3.6M
-328 (-0.009%)
Dec 31, 2025
BLACKROCK INC.
7.65%
2.6M
+121,932 (+4.61%)
Jun 30, 2024
N/A
5.60%
1.9M
+14,454 (+0.75%)
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
5.60%
1.9M
+14,454 (+0.75%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions621.8M (60.50%)
  • Mutual Funds400.2M (38.94%)
  • Insiders5.8M (0.57%)
  • Other0 (0.00%)

Insider Transactions

  • 0.57% (5.8M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $56.7M
    Amount of InsiderBuying (last 12 months)
  • 5
    Number of InsiderSelling (last 12 months)
  • $8.8M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Weill David
Buy
Sep 11, 2026
$109,057.68
1,336
$81.63
16,392
TOBIN JAMES R
Gift
Aug 17, 2026
$0.00
18,000
$0.00
0
Gunderson Thomas James
Exempt
Jun 15, 2026
$0.00
19,285
$0.00
0
Gunderson Thomas James
Exempt
Jun 15, 2026
$42,619.85
19,285
$2.21
26,266
Gunderson Thomas James
Sell
Jun 15, 2026
$722,377.44
9,624
$75.06
16,642
Hernandez Gerardo
Chief Financial Officer
Exempt
Mar 04, 2026
$102,106.88
1,324
$77.12
16,013
Hernandez Gerardo
Chief Financial Officer
Sell
Mar 04, 2026
$194,906.04
1,324
$147.21
14,689
Hernandez Gerardo
Chief Financial Officer
Exempt
Mar 04, 2026
$412,894.08
5,912
$69.84
20,601
Hernandez Gerardo
Chief Financial Officer
Sell
Mar 04, 2026
$870,305.52
5,912
$147.21
14,689
Weill David
Exempt
Mar 04, 2026
$0.00
3,571
$0.00
1,429
Weill David
Exempt
Mar 04, 2026
$50,708.20
3,571
$14.20
15,705
Weill David
Sell
Mar 04, 2026
$524,294.22
3,571
$146.82
12,134
Hernandez Gerardo
Chief Financial Officer
Exempt
Mar 04, 2026
$0.00
1,324
$0.00
3,975
Hernandez Gerardo
Chief Financial Officer
Exempt
Mar 04, 2026
$0.00
5,912
$0.00
13,010
Hernandez Gerardo
Chief Financial Officer
Sell
Mar 02, 2026
$52,170.00
375
$139.12
14,689
Cecere Giovanni
Chief Commercial Officer
Award
Feb 18, 2026
$0.00
16,734
$0.00
16,734
Cecere Giovanni
Chief Commercial Officer
Award
Feb 18, 2026
$0.00
11,082
$0.00
19,057
Ranganath Anil P.
See remarks
Exempt
Nov 25, 2025
$0.00
3,000
$0.00
7,420
Ranganath Anil P.
See remarks
Exempt
Nov 25, 2025
$281,640.00
3,000
$93.88
16,955
Ranganath Anil P.
See remarks
Sell
Nov 25, 2025
$435,660.00
3,000
$145.22
13,955
Hassanein Waleed H
President & CEO
Buy
Nov 17, 2025
$1.0M
8,775
$114.00
495,009
Basile Edward M
Exempt
Oct 29, 2025
$0.00
4,142
$0.00
0
Basile Edward M
Exempt
Oct 29, 2025
$2,899.40
4,142
$0.70
7,008
Basile Edward M
Sell
Oct 29, 2025
$540,323.90
4,142
$130.45
2,866
Hassanein Waleed H
President & CEO
Buy
Aug 07, 2025
$768,101.36
6,617
$116.08
484,376
Hassanein Waleed H
President & CEO
Buy
Aug 07, 2025
$217,107.30
1,858
$116.85
486,234
Hassanein Waleed H
President & CEO
Buy
Aug 06, 2025
$996,912.00
8,400
$118.68
477,759
Ranganath Anil P.
See remarks
Sell
Jun 09, 2025
$95,902.80
686
$139.80
13,955
Basile Edward M
Exempt
May 27, 2025
$0.00
5,000
$0.00
8,285
Basile Edward M
Exempt
May 27, 2025
$3,500.00
5,000
$0.70
7,866