TransMedics TMDX Insider Ownership

NASDAQ TMDX
$93.68 +5.44 (+6.17%)
As of: Nov 9, 2026 · 1:36 PM EST

Insider Holdings by Owner

738.29K Shares
Edwin Kania263.73K35.7%
Waleed H Hassanein171.09K23.2%
Nicholas Corcoran41.56K5.6%
Tamer I Khayal36.04K4.9%
Gerardo Hernandez31.94K4.3%
Other insiders (14)193.93K26.3%

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
3.32%
▼-0.254% pp QoQ
Shares Held by Insiders
1.15Mn
filed for Sep 2026
▼-7.11% QoQ
Shares Outstanding
34.63Mn
34,629,682 shares
Direct Holdings
650.49K
Indirect: 500.16K
Net Open-Market Trades
+1.34K
net bought · $109.06K in Sep 2026
Insiders Holding Shares
19
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Open-Market Insider Trades

Bought Sold
Latest quarter —
Net over range —
Net-buying quarters —

Insider Ownership Summary

Over the trailing 12 months, TMDX insiders bought $1.11 million worth of shares (10.11K shares) and sold $4.33 million worth (34.75K shares) in open-market trades.

Form 4 Holdings

Insiders Holding TMDX

Insiders 19
Shares held 738.29K
Of outstanding 2.13%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Edwin Kania Director 263,732 0 263,732 35.7% 22 May, 2026
2 Waleed H Hassanein President Ceo 171,093 0 171,093 23.2% 14 Jul, 2026
3 Nicholas Corcoran Officer 41,558 0 41,558 5.6% 14 Jul, 2026
4 Tamer I Khayal Chief Commercial Officer 36,042 0 36,042 4.9% 05 Mar, 2025
5 Gerardo Hernandez Chief Financial Officer 31,935 0 31,935 4.3% 14 Jul, 2026
6 Miriam Provost Vp, Global Regulatory Affairs 23,348 0 23,348 3.2% 15 Dec, 2023
7 Fernando N. Araujo Officer 22,969 0 22,969 3.1% 30 Oct, 2026
8 Stephen Gordon Chief Financial Officer 21,299 0 21,299 2.9% 05 Jun, 2024
9 Giovanni Cecere Chief Commercial Officer 19,057 0 19,057 2.6% 20 Feb, 2026
10 Thomas J. Gunderson Director 16,642 0 16,642 2.3% 17 Jun, 2026
11 David Weill Director 16,392 0 16,392 2.2% 14 Sep, 2026
12 Matthew S. Forsyth Officer 15,409 0 15,409 2.1% 21 May, 2026
13 John F Carey Vp Of Operations 14,499 0 14,499 2.0% 03 Feb, 2023
14 Anil P. Ranganath Officer 13,091 0 13,091 1.8% 04 Mar, 2026
15 James R Tobin Director 6,981 0 6,981 0.9% 22 May, 2026
16 Merilee Raines Director 6,981 0 6,981 0.9% 22 May, 2026
17 Stephanie Lovell Director 5,788 0 5,788 0.8% 22 May, 2026
18 Edward M Basile Director 5,788 0 5,788 0.8% 22 May, 2026
19 Laura Damme Vp, Clinical Affairs 5,685 0 5,685 0.8% 22 Feb, 2023

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,108 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
28 Oct, 2026 Fernando N. Araujo Officer Acquired A 22,969 $0.00 $0 22,969 Direct
28 Oct, 2026 Fernando N. Araujo Officer Acquired A 34,419 $0.00 $0 34,419 Direct
11 Sep, 2026 David Weill Director Acquired P 1,336 $81.63 $109.06K 16,392 Direct
17 Aug, 2026 James R Tobin Director Disposed G 18,000 $0.00 $0 0 Indirect
10 Jul, 2026 Gerardo Hernandez Chief Financial Officer Acquired A 17,246 $0.00 $0 31,935 Direct
10 Jul, 2026 Waleed H Hassanein President Ceo Acquired A 49,669 $0.00 $0 171,093 Direct
10 Jul, 2026 Nicholas Corcoran Officer Acquired A 11,727 $0.00 $0 41,558 Direct
10 Jul, 2026 Gerardo Hernandez Chief Financial Officer Acquired A 26,153 $0.00 $0 26,153 Direct
10 Jul, 2026 Nicholas Corcoran Officer Acquired A 17,784 $0.00 $0 17,784 Direct
10 Jul, 2026 Waleed H Hassanein President Ceo Acquired A 112,984 $0.00 $0 112,984 Direct
15 Jun, 2026 Thomas J. Gunderson Director Acquired M 19,285 $2.21 $42.62K 26,266 Direct
15 Jun, 2026 Thomas J. Gunderson Director Disposed S 9,624 $75.06 $722.38K 16,642 Direct
15 Jun, 2026 Thomas J. Gunderson Director Disposed M 19,285 $0.00 $0 0 Direct
20 May, 2026 James R Tobin Director Acquired A 2,922 $0.00 $0 6,981 Direct
20 May, 2026 Stephanie Lovell Director Acquired A 2,922 $0.00 $0 5,788 Direct
20 May, 2026 Thomas J. Gunderson Director Acquired A 2,922 $0.00 $0 6,981 Direct
20 May, 2026 Merilee Raines Director Acquired A 2,922 $0.00 $0 6,981 Direct
20 May, 2026 David Weill Director Acquired A 2,922 $0.00 $0 15,056 Direct
20 May, 2026 Edward M Basile Director Acquired A 2,922 $0.00 $0 5,788 Direct
20 May, 2026 Edwin Kania Director Acquired A 2,922 $0.00 $0 263,732 Direct