TransMedics Group, Inc.
US ˙ NasdaqGM ˙ US89377M1099

SecurityTMDX / TransMedics Group, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership52,625 shares
Latest Disclosed Value $ 5,231,451
Engineers Gate Manager LP reports 282.09% increase in ownership of TMDX / TransMedics Group, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 52,625 shares of TransMedics Group, Inc. (US:TMDX) valued at $5,231,451 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,773 shares of TransMedics Group, Inc.. This represents a change in shares of 282.09% during the quarter. The current value of the position is $3,667,436 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F TRANSMEDICS GROUP COM 89377M109 52,625 38,852 282.09 5,231 212.30 0.0654
2026-02-17 2025-12-31 13F TRANSMEDICS GROUP COM 89377M109 13,773 -10,379 -42.97 1,675 -38.17 0.0199
2025-11-14 2025-09-30 13F TRANSMEDICS GROUP COM 89377M109 24,152 -16,965 -41.26 2,710 -50.83 0.0310
2025-08-14 2025-06-30 13F TRANSMEDICS GROUP COM 89377M109 41,117 28,240 219.31 5,510 536.26 0.0685
2025-05-15 2025-03-31 13F TRANSMEDICS GROUP COM 89377M109 12,877 12,877 866 0.0146
2025-02-14 2024-12-31 13F TRANSMEDICS GROUP COM 89377M109 0 -16,987 -100.00 0 -100.00
2024-11-14 2024-09-30 13F TRANSMEDICS GROUP COM 89377M109 16,987 9,942 141.12 2,667 151.27 0.0520
2024-08-14 2024-06-30 13F TRANSMEDICS GROUP COM 89377M109 7,045 7,045 1,061 0.0239
2023-08-14 2023-06-30 13F TRANSMEDICS GROUP COM 89377M109 0 -10,682 -100.00 0 -100.00
2023-05-15 2023-03-31 13F TRANSMEDICS GROUP COM 89377M109 10,682 4,434 70.97 809 109.87 0.0338
2023-02-14 2022-12-31 13F TRANSMEDICS GROUP COM 89377M109 6,248 -5,419 -46.45 386 -20.94 0.0232
2022-11-14 2022-09-30 13F TRANSMEDICS GROUP COM 89377M109 11,667 -6,710 -36.51 487 -15.74 0.0303
2022-08-15 2022-06-30 13F TRANSMEDICS GROUP COM 89377M109 18,377 18,377 578 0.0212
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.