9 institutions reported holding $15.5M of TRANSMEDICS GROUP INC COM (TMDX) in SEC 13F filings for 2026-06-30. Largest institutional holders: CONGRESS ASSET MANAGEMENT CO ($15.1M), 180 WEALTH ADVISORS, LLC ($276,126), GAMMA Investing LLC ($111,984), MassMutual Private Wealth & Trust, FSB ($14,812), HARBOR INVESTMENT ADVISORY, LLC ($4,915). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CONGRESS ASSET MANAGEMENT CO | $15.1M | 227,834 | New |
| 2 | 180 WEALTH ADVISORS, LLC | $276,126 | 4,157 | New |
| 3 | GAMMA Investing LLC | $111,984 | 1,686 | Trimmed |
| 4 | MassMutual Private Wealth & Trust, FSB | $14,812 | 223 | Added |
| 5 | HARBOR INVESTMENT ADVISORY, LLC | $4,915 | 74 | Hold |
| 6 | BEACON INVESTMENT ADVISORY SERVICES, INC. | $2,657 | 40 | Hold |
| 7 | ELEVATION WEALTH PARTNERS, LLC | $200 | 3 | Hold |
| 8 | Versant Capital Management, Inc | $0 | 0 | Exited |
| 9 | Cedar Mountain Advisors, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30