TransMedics Group (TMDX) stock: insider trades, news & valuation
Health Care · Net sellingShare price and insider trades
TransMedics Group insider trading at a glance (Oct 9, 2026): in the past 12 months, 2 insiders bought $1.1M and 7 sold $4.9M of TMDX stock on the open market; P/E 20.2 vs. a sector median of 24.7.
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TMDX insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $109K | 1 | — | 0 |
| Q2 2026 | — | 0 | $722K | 1 |
| Q1 2026 | — | 0 | $2.4M | 7 |
| Q4 2025 | $1.0M | 1 | $1.8M | 4 |
Valuation, profit and volume
Pick score 55/100Summary
Over the past 12 months, 2 TransMedics Group, Inc. insiders reported open-market purchases totaling $1.1M, while 7 insiders reported sales totaling $4.9M. 1 of 12 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
TMDX stock news and SEC filings
Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 14SEC | David WeillDirector | Buy | 1,33616,392 held (+9%) | $81.63 | $109K | -4.6% | — |
| Jun 17SEC | Thomas J. GundersonDirector | Sell | 9,62416,642 held (−37%) | $75.06 | $722K | +3.7% | — |
| Mar 6SEC | David WeillDirector | Sell | 3,57112,134 held (−23%) | $146.82 | $524K | -47.0% | — |
| Mar 6SEC | Stephanie LovellDirector | Sell | 1,1932,866 held (−29%) | $149.62 | $178K | -48.0% | — |
| Mar 4SEC | Gerardo HernandezCFO | Sell | 5,91214,689 held (−29%) | $147.21 | $870K | -47.1% | — |
| Mar 4SEC | Nicholas CorcoranSee Remarks | Sell | 2,96629,831 held (−9%) | $139.12 | $413K | -44.0% | — |
| Mar 4SEC | Gerardo HernandezCFO | Sell | 1,32414,689 held (−8%) | $147.21 | $195K | -47.1% | — |
| Mar 4SEC | Anil P. RanganathSee Remarks | Sell | 86413,091 held (−6%) | $139.12 | $120K | -44.0% | — |
| Mar 4SEC | Gerardo HernandezCFO | Sell | 37514,689 held (−2%) | $139.12 | $52K | -44.0% | — |
| Dec 5SEC | David WeillDirector | Sell | 5,00012,134 held (−29%) | $138.64 | $693K | -43.8% | — |
| Dec 5SEC | Gerardo HernandezCFO | Sell | 92015,064 held (−6%) | $139.62 | $128K | -44.2% | — |
| Nov 26SEC | Anil P. RanganathSee Remarks | Sell | 3,00013,955 held (−18%) | $145.22 | $436K | -46.4% | — |
| Nov 18SEC | Waleed H HassaneinCEO, President | Buy | 8,775495,009 held (+2%) | $114.00 | $1.0M | -31.7% | — |
| Oct 31SEC | Edward M BasileDirector | Sell Plan | 4,1422,866 held (−59%) | $130.45 | $540K | -40.3% | — |
Insiders at TransMedics Group, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Waleed H HassaneinCEO, President | $1.0M | — | Nov 18, 2025 | — |
| David WeillDirector | $109K | $1.2M | Sep 14, 2026 | — |
| Gerardo HernandezCFO | — | $1.2M | Mar 4, 2026 | — |
| Thomas J. GundersonDirector | — | $722K | Jun 17, 2026 | — |
| Anil P. RanganathSee Remarks | — | $556K | Mar 4, 2026 | — |
| Edward M BasileDirector | — | $540K | Oct 31, 2025 | — |
| Nicholas CorcoranSee Remarks | — | $413K | Mar 4, 2026 | — |
| Stephanie LovellDirector | — | $178K | Mar 6, 2026 | — |
Insider activity at other Health Care companies
Same sector, ranked by insider buying in the last 90 days.
TMDX stock: common questions
Are TransMedics Group, Inc. insiders buying TMDX stock?
In the past 12 months, 2 insiders reported open-market purchases of TMDX worth $1.1M. The latest was Director David Weill bought $109K of TMDX at $81.63 — first open-market purchase in our records.
Are TransMedics Group, Inc. insiders selling TMDX stock?
7 insiders reported sales worth $4.9M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is TMDX's P/E ratio?
TMDX trades at about 20.2 times trailing earnings, compared with a median of 24.7 for the Health Care sector.
What is TMDX's 52-week range?
Over the past year TMDX has traded between $62.04 and $150.42. It last closed at $77.87 on Oct 9, 2026.