TransMedics Group, Inc.· TMDX

🇺🇸 US · MidSP600NASDAQ

HealthcareMedical - DevicesWebsite

Price: $76.49
Day: -5.28%
Mkt Cap: $2.64B
52W Range: $60.11 – $156.00
Volume: 2.95M
Beta: 1.88

D55D FrameworkQuarterly Data

Holdings Analysis

Insider activity, institutional flows, and fund ownership.

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TransMedics Group, Inc.

TMDX|Healthcare|Medical - Devices

Current price: $76

Smart Money

Dimension 5 of 5

Insider Activity, Q2 2026

Latest scored quarter, net flow, and top transactions by value

Net dollar flow-$722.4K

Net share flow-9.6K

Purchases0 ($0)

Sales1 ($722.4K)

Top Notable Transactions

Insider

Type

Value

Date

Hassanein Waleed H

Sale

$4.4M

Aug 22

Hassanein Waleed H

Sale

$3.9M

May 6

Hassanein Waleed H

Sale

$3.4M

Aug 21

Institutional Ownership, Q1 2026

Ownership share, position changes, share flow, and top holders

Ownership106.5%

13F share flow-24.9%

Investors holding433

+278 adding-223 reducing

213

140

New 65Inc 213Red 140Closed 83

Top Institutional Holders

Institution

Value

Change

BLACKROCK, INC.

$526.2M

-2.2%

FMR LLC

$506.6M

+0.1%

STATE STREET CORP

$131.2M

+3.2%

INVESCO LTD.

$103.2M

+51.1%

ETF & Mutual Fund Activity, Q2 2026

Latest meaningful quarter: fund-by-fund buying / unchanged / selling

Funds reporting140

Total shares held9.2M

Share flow-26.8%

40 buying33 selling

Buying 40Unchanged 67Selling 33

Top Fund Holders

Fund

Weight

Change

Manager Directed Portfolios

409.0K

134.28%

AIM COUNSELOR SERIES TRUST (INVESCO COUNSELOR SERIES TRUST)

256.5K

0.10%

MFS SERIES TRUST I

236.1K

1.06%

SCHWAB STRATEGIC TRUST

184.3K

0.06%

-902

See the complete picture

The full 5D Framework: Business Quality · Peer Comparison · Valuation · Analyst Sentiment · Smart Money

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Generated August 6, 2026

For educational purposes only. Not financial advice. Data may be delayed or incomplete.

Smart Money Sentiment

TMDX Smart Money Sentiment Score

A weighted 1-5 sentiment score across three smart money signals.

Smart Money

2.9/5

Neutral

Weighted across 3 components

Component Breakdown (3 of 3 available)

Insider Activity

40% weight

Institutional Flow

50% weight

-12

Fund Flow

10% weight

Overall Smart Money sentiment of 2.9/5 (Neutral) based on a weighted combination of 3 components. Insider activity uses a relative-baseline comparison against the stock's own history; institutional flow tracks position momentum and 13F share changes; fund flow measures ETF / mutual-fund buying vs selling. Higher scores indicate stronger bullish sentiment from professional investors.Last updated August 5, 2026.

Insider Trading Activity

Insider trading analysis comparing the latest quarter against the stock's own historical baseline.

Insider Activity for TMDX

Net insider share flow by quarter (C-suite & director purchases minus sales)

Neutral

Routine insider selling in Q2 2026

1 sale totaling $722.4K (9.6K shares)

Share volume is at a routine pace (0.8x average)

Buying seen in 2 of 7 quarters

Notable Recent Transactions, TMDX

Top 8 highest-value recent insider trades

Hassanein Waleed H

CEO

Sell

25,000 shares at $175.00

Aug 22, 2024$4.38M

Hassanein Waleed H

CEO

Sell

30,000 shares at $130.07

May 6, 2024$3.90M

Hassanein Waleed H

CEO

Sell

20,000 shares at $171.03

Aug 21, 2024$3.42M

Hassanein Waleed H

CEO

Sell

22,500 shares at $120.25

May 1, 2024$2.71M

Hassanein Waleed H

CEO

Sell

23,500 shares at $114.17

May 1, 2024$2.68M

Khayal Tamer I

Officer

Sell

23,231 shares at $105.96

May 1, 2024$2.46M

TOBIN JAMES R

Director

Sell

12,664 shares at $158.96

Aug 8, 2024$2.01M

Gordon Stephen

Officer

Sell

15,000 shares at $128.00

May 6, 2024$1.92M

Institutional Ownership Analysis

Institutional ownership analysis with position momentum, 13F share flow, and ownership percentage trends.

Institutional Ownership Over Time for TMDX

Total dollar value invested by institutions each quarter

Neutral

Mixed institutional activity in Q1 2026

106.5% institutional ownership

Slight accumulation: 278 adding vs 223 reducing

13F shares decreased by 2.0%, a notable change

Momentum weakening from prior quarter

Position Changes

Q2 2026: how are institutions adjusting their positions?

+88 growing-355 shrinkingNet: -267

316

New (24)

Increased (64)

Reduced (39)

Closed (316)

Top Institutional Holders, TMDX

Largest 8 institutional positions by ownership percentage as of Q2 2026

EMERALD ADVISERS, LLC

490.5K

$32.6M

Ownership

1.43%

+43.1%

CITIGROUP INC

386.1K

$25.6M

Ownership

1.12%

+8.0%

WASATCH ADVISORS LP

308.4K

$20.5M

Ownership

0.90%

-10.9%

ZEVENBERGEN CAPITAL INVESTMENTS LLC

308.4K

$20.5M

Ownership

0.90%

+7.6%

EMERALD MUTUAL FUND ADVISERS TRUST

302.1K

$20.1M

Ownership

0.88%

+31.7%

PRINCIPAL FINANCIAL GROUP INC

240.9K

$16.0M

Ownership

0.70%

+4.1%

CONGRESS ASSET MANAGEMENT CO /MA

227.8K

$15.1M

Ownership

0.66%

+100.0%

OPPENHEIMER & CO INC

110.8K

$7.4M

Ownership

0.32%

-2.4%

ETF and Mutual Fund Holdings

ETF and mutual fund activity breakdown showing buying vs selling funds, top fund holders, and detailed holdings.

Fund Activity

Q2 2026: 140 ETFs and mutual funds reporting

40 buying33 sellingNet: +7

Buying (40)

Unchanged (67)

Selling (33)

Neutral

Mixed fund activity in Q2 2026

140 ETFs and mutual funds reporting

40 buying vs 33 selling (balanced)

Top Fund Holders, TMDX

Largest 8 ETF and mutual fund positions by shares held as of latest filing

Manager Directed Portfolios

409.0K

Weight

134.28%

No change

AIM COUNSELOR SERIES TRUST (INVESCO COUNSELOR SERIES TRUST)

256.5K

Weight

0.10%

No change

MFS SERIES TRUST I

236.1K

Weight

1.06%

No change

SCHWAB STRATEGIC TRUST

184.3K

Weight

0.06%

Decreased

JPMORGAN TRUST II

116.6K

Weight

0.01%

No change

John Hancock Funds II

63.0K

Weight

0.00%

No change

COLUMBIA FUNDS SERIES TRUST

51.0K

Weight

0.18%

Decreased

LORD ABBETT RESEARCH FUND INC

36.8K

Weight

2.26%

No change

TransMedics Group, Inc.· TMDX

Holdings Analysis

Insider Trading Activity

1.3Transaction History238Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings96Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights

Search stocks

Holdings Analysis

Insider Trading Activity

1.3Transaction History238Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings96Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights