X4 Pharmaceuticals, Inc. · NASDAQ:XFOR
X4 Pharmaceuticals, Inc. shareholders
As of Jun 30, 2026, 84 institutions reported holding X4 Pharmaceuticals, Inc. Largest: Morgan Stanley, Fidelity and Bain Capital Life Sciences Investors, LLC. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of X4 Pharmaceuticals, Inc. | Change | Filed |
|---|---|---|---|---|
| Morgan Stanley | 9.46M | −5,713 | Aug 13, 2026 | |
| Fidelity | 8.32M | +218K | Aug 13, 2026 | |
| Bain Capital Life Sciences Investors, LLC | 7.97M | no change | Aug 14, 2026 | |
| Perceptive Advisors LLC | 7.93M | +1.2M | Aug 14, 2026 | |
| Kalehua Capital Management LLC | 7.45M | no change | Aug 19, 2026 | |
| Saturn V Capital Management LP | 6.97M | +517K | Aug 14, 2026 | |
| Empery Asset Management, LP | 6.93M | −2.01M | Aug 11, 2026 | |
| Deep Track Capital, LP | 5.88M | −461K | Aug 14, 2026 | |
| BlackRock | 5.55M | +4.34M | Aug 7, 2026 | |
| Nantahala Capital Management, LLC | 4.9M | +2.45M | Aug 19, 2026 |