X4 Pharmaceuticals, Inc. (XFOR) ownership: Top institutional holder: MORGAN STANLEY ($39.10M). Insider activity: Net Seller (0 buys, 1 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| MORGAN STANLEY | 9466992.00 | $39.10M | 2026-03-31 |
| Empery Asset Management, LP | 8944118.00 | $36.94M | 2026-03-31 |
| FMR LLC | 8103400.00 | $33.47M | 2026-03-31 |
| Bain Capital Life Sciences Investors, LLC | 7967454.00 | $32.91M | 2026-03-31 |
| PERCEPTIVE ADVISORS LLC | 6737648.00 | $27.83M | 2026-03-31 |
| Saturn V Capital Management LP | 6456646.00 | $26.67M | 2026-03-31 |
| Deep Track Capital, LP | 6339535.00 | $26.18M | 2026-03-31 |
| Kalehua Capital Management LLC | 3722840.00 | $15.38M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-12 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.