TransMedics Group, Inc.

TMDX

Exchange: Nasdaq
Industry: Electromedical & Electrotherapeutic Apparatus
SEC CIK: 0001756262

SEC filings (opens in a new tab)

In the last 90 days, TransMedics Group, Inc. insiders filed 1 open-market purchase and 0 sales; 375 institutions reported holding it in 13F filings for Q2 2026, worth $2.31B in total; no superinvestor holds it.

Q4 2021 vs. Q3 2021

How the institutions holding TransMedics Group, Inc. changed between Q3 2021 and Q4 2021.

All holders in Q4 2021 All holders in Q3 2021

13F holders of TMDX: Q3 2021 compared with Q4 2021
Measure	Q3 2021	Of which not filed for Q4 2021	Q4 2021	Change
Holders	120	1	121	+2
Shares	19.2M	923.2K	20.1M	+1.77M (+9.7%)
Value	$636.5M	$30.5M	$384.7M	−$221.3M (−36.5%)

1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (25)

Institutions that held TransMedics Group, Inc. at the end of Q4 2021 but not at the end of Q3 2021.

Institutions new to TMDX in Q4 2021
Institution	Shares	Value	% of portfolio
Kornitzer Capital Management Inc	467,284	$8.95M	0.13%
Price T Rowe Associates Inc	186,263	$3.57M	0.00%
HarbourVest Partners LLC	116,123	$2.23M	0.28%
Millrace Asset Group, Inc.	83,723	$1.60M	0.94%
Royce & Associates LP	61,000	$1.17M	0.01%
Skylands Capital, LLC	51,200	$981.0K	0.11%
Gsa Capital Partners LLP	33,499	$642.0K	0.08%
Marshall Wace, LLP	20,159	$386.0K	0.00%
Jane Street Group, LLC	18,735	$359.0K	0.00%
Hamilton Lane Advisors LLC	18,607	$357.0K	0.05%
Boston Partners	16,560	$317.0K	0.00%
State of Wisconsin Investment Board	15,500	$297.0K	0.00%
Wolverine Trading, LLC	12,914	$251.0K	0.00%
Dynamic Technology Lab Private Ltd	13,078	$251.0K	0.03%
Allspring Global Investments Holdings, LLC	5,194	$99.0K	0.00%
Ensign Peak Advisors, Inc	5,080	$97.0K	0.00%
Aquatic Capital Management LLC	900	$17.0K	0.03%
National Bank of Canada	335	$6.00K	0.00%
Adirondack Trust Co	220	$4.00K	0.00%
Signet Financial Management, LLC	194	$4.00K	0.00%
City State Bank	100	$2.00K	0.00%
Signaturefd, LLC	39	$1.00K	0.00%
CWM, LLC	54	$1.00K	0.00%
Confluence Wealth Services, Inc.	100	$1.00K	0.00%
Parallel Advisors, LLC	12	$0	0.00%

Sold out (23)

Institutions that held TransMedics Group, Inc. at the end of Q3 2021 and filed for Q4 2021 without it.

Institutions that sold out of TMDX in Q4 2021
Institution	Shares, Q3 2021	Value, Q3 2021
Calamos Advisors LLC	118,141	$3.91M
Portolan Capital Management, LLC	78,106	$2.58M
Eventide Asset Management, LLC	77,364	$2.56M
HSBC Holdings PLC	35,020	$1.16M
M&T Bank Corp	30,900	$1.02M
Man Group plc	26,199	$867.0K
Gladstone Institutional Advisory LLC	14,270	$472.0K
Signature Wealth Management Partners, LLC	14,000	$463.0K
Walleye Capital LLC	12,454	$412.0K
HighTower Advisors, LLC	10,203	$336.0K
SG Americas Securities, LLC	9,408	$311.0K
Kovack Advisors, Inc.	9,200	$304.0K
Henshaw Capital LLC	7,878	$260.7K
Global Retirement Partners, LLC	6,841	$226.0K
Arizona State Retirement System	6,772	$224.0K
Ameriprise Financial Inc	6,037	$200.0K
Parametric Portfolio Associates LLC	6,051	$200.0K
IFP Advisors, Inc	5,380	$179.0K
O'Shaughnessy Asset Management, LLC	1,318	$44.0K
Lazard Asset Management LLC	1,133	$37.0K
Koshinski Asset Management, Inc.	400	$13.2K
TCI Wealth Advisors, Inc.	113	$4.00K
Quadrant Capital Group LLC	18	$1.00K

Not filed for Q4 2021 yet (1)

Institutions that held TransMedics Group, Inc. at the end of Q3 2021 and haven't filed a 13F for Q4 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding TMDX in Q3 2021 that haven't filed for Q4 2021
Institution	Shares, Q3 2021	Value, Q3 2021
KPCB XIII Associates, LLC	923,221	$30.5M