TransMedics Group, Inc.
MX ˙ BMV ˙ US89377M1099
SecurityMX:TMDX / TransMedics Group, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership694,150 shares
Latest Disclosed Value $ 69,005,561
Morgan Stanley reports 3.95% increase in ownership of TMDX / TransMedics Group, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 694,150 shares of TransMedics Group, Inc. (MX:TMDX) valued at $69,005,561 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 667,761 shares of TransMedics Group, Inc.. This represents a change in shares of 3.95% during the quarter.

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 694,150 26,389 3.95 69,006 -15.05 0.0042
2026-05-27 2025-12-31 13F/A-1 TRANSMEDICS GROUP COM 89377M109 667,761 119,942 21.89 81,233 32.16 0.0048
2026-02-13 2025-12-31 13F TRANSMEDICS GROUP COM 89377M109 667,761 119,942 81,233 0.0048
2026-05-27 2025-09-30 13F/A-1 TRANSMEDICS GROUP COM 89377M109 547,819 -184,989 -25.24 61,466 -37.41 0.0037
2025-11-14 2025-09-30 13F TRANSMEDICS GROUP COM 89377M109 547,819 -184,989 61,466 0.0037
2025-08-15 2025-06-30 13F TRANSMEDICS GROUP COM 89377M109 732,808 133,748 22.33 98,204 143.66 0.0064
2025-05-15 2025-03-31 13F TRANSMEDICS GROUP COM 89377M109 599,060 144,622 31.82 40,305 42.25 0.0029
2025-05-15 2024-12-31 13F/A-1 TRANSMEDICS GROUP COM 89377M109 454,438 -68,467 -13.09 28,334 -65.49 0.0020
2025-02-14 2024-12-31 13F TRANSMEDICS GROUP COM 89377M109 454,438 -68,467 28,334 0.0020
2025-05-14 2024-09-30 13F/A-2 TRANSMEDICS GROUP COM 89377M109 522,905 11,269 2.20 82,096 6.53 0.0060
2025-02-14 2024-09-30 13F/A-1 TRANSMEDICS GROUP COM 89377M109 522,905 11,269 82,096 0.0060
2024-11-14 2024-09-30 13F TRANSMEDICS GROUP COM 89377M109 522,905 11,269 82,096 0.0060
2025-05-14 2024-06-30 13F/A-2 TRANSMEDICS GROUP COM 89377M109 511,636 66,729 15.00 77,063 134.26 0.0060
2024-10-17 2024-06-30 13F/A-1 TRANSMEDICS GROUP COM 89377M109 511,636 66,729 77,063 0.0060
2024-08-14 2024-06-30 13F TRANSMEDICS GROUP COM 89377M109 511,636 66,729 77,063 0.0060
2024-10-17 2024-03-31 13F/A-2 TRANSMEDICS GROUP COM 89377M109 444,907 -34,939 -7.28 32,896 -13.14 0.0026
2024-08-16 2024-03-31 13F/A-1 TRANSMEDICS GROUP COM 89377M109 444,907 -34,939 32,896 0.0003
2024-05-15 2024-03-31 13F TRANSMEDICS GROUP COM 89377M109 444,907 -34,939 32,896 0.0026
2024-08-16 2023-12-31 13F/A-1 TRANSMEDICS GROUP COM 89377M109 479,846 -33,951 -6.61 37,874 34.64 0.0033
2024-02-13 2023-12-31 13F TRANSMEDICS GROUP COM 89377M109 479,846 -33,951 37,874 0.0033
2023-11-15 2023-09-30 13F TRANSMEDICS GROUP COM 89377M109 513,797 -77,547 -13.11 28,130 -43.36 0.0029
2023-08-14 2023-06-30 13F TRANSMEDICS GROUP COM 89377M109 591,344 60,459 11.39 49,661 23.53 0.0049
2023-05-15 2023-03-31 13F TRANSMEDICS GROUP COM 89377M109 530,885 197,998 59.48 40,204 95.68 0.0043
2023-02-14 2022-12-31 13F TRANSMEDICS GROUP COM 89377M109 332,887 -35,689 -9.68 20,546 33.54 0.0023
2022-11-14 2022-09-30 13F TRANSMEDICS GROUP COM 89377M109 368,576 307,301 501.51 15,385 698.39 0.0021
2022-10-27 2022-06-30 13F/A-1 TRANSMEDICS GROUP COM 89377M109 61,275 35,729 139.86 1,927 180.09 0.0003
2022-08-15 2022-06-30 13F TRANSMEDICS GROUP COM 89377M109 61,275 35,729 1,927 0.0001
2022-10-27 2022-03-31 13F/A-1 TRANSMEDICS GROUP COM 89377M109 25,546 -27,870 -52.18 688 -32.75 0.0001
2022-05-13 2022-03-31 13F TRANSMEDICS GROUP COM 89377M109 25,546 -27,870 688 0.0001
2022-02-14 2021-12-31 13F TRANSMEDICS GROUP COM 89377M109 53,416 -72,742 -57.66 1,023 -75.50 0.0001
2021-11-15 2021-09-30 13F TRANSMEDICS GROUP COM 89377M109 126,158 103,645 460.38 4,175 458.90 0.0006
2021-08-23 2021-06-30 13F/A-1 TRANSMEDICS GROUP COM 89377M109 22,513 -92,094 -80.36 747 -84.29 0.0001
2021-08-16 2021-06-30 13F TRANSMEDICS GROUP COM 89377M109 22,513 -92,094 747 0.0000
2021-05-17 2021-03-31 13F TRANSMEDICS GROUP COM 89377M109 114,607 85,418 292.64 4,755 718.42 0.0007
2021-02-16 2020-12-31 13F TRANSMEDICS GROUP COM 89377M109 29,189 1,800 6.57 581 53.70 0.0001
2020-11-13 2020-09-30 13F TRANSMEDICS GROUP COM 89377M109 27,389 7,134 35.22 378 4.13 0.0001
2020-08-14 2020-06-30 13F TRANSMEDICS GROUP COM 89377M109 20,255 8,049 65.94 363 146.94 0.0001
2020-05-26 2020-03-31 13F/A-1 TRANSMEDICS GROUP COM 89377M109 12,206 -89,841 -88.04 147 -92.42 0.0000
2020-05-15 2020-03-31 13F TRANSMEDICS GROUP COM 89377M109 12,206 -89,841 147 11.2927
2020-02-14 2019-12-31 13F TRANSMEDICS GROUP COM 89377M109 102,047 86,477 555.41 1,939 424.05 0.0005
2019-11-14 2019-09-30 13F TRANSMEDICS GROUP COM 89377M109 15,570 -3,352 -17.71 370 -32.48 0.0001
2019-08-14 2019-06-30 13F TRANSMEDICS GROUP COM 89377M109 18,922 18,922 548 0.0001
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.