X4 Pharmaceuticals, Inc. · NASDAQ:XFOR
Bain Capital Life Sciences Fund, L.P. reported a 9.99% stake in X4 Pharmaceuticals, Inc. (Schedule 13G)
Event Sep 9, 2025 · Filed Sep 15, 2025
Bain Capital Life Sciences Fund, L.P. reported a 9.99% stake in X4 Pharmaceuticals, Inc., 2,436,588 shares, as a passive investor on Sep 9, 2025. Filed Sep 15, 2025 (Schedule 13G).
- Stake
- 9.99%
- Shares
- 2,436,588
- Intent
- Passive
- What changed
- Crossed above 5%
- Filed together
- 6 holders
The filing in full
| Holder | Stake | Shares |
|---|---|---|
| Bain Capital Life Sciences Fund, L.P. | 9.99% | 2,436,588 |
| Bain Capital Life Sciences Fund II, L.P. | 9.99% | 2,436,588 |
| BCIP Life Sciences Associates, LP | 9.99% | 2,436,588 |
| BCLS II Investco, LP | 9.99% | 2,436,588 |
| BCLS I Investco, LP | 9.99% | 2,436,588 |
| BCLS II Equity Opportunities, LP | 9.99% | 2,436,588 |
Source
Related
- X4 Pharmaceuticals, Inc.
- Bain Capital Life Sciences Fund, L.P.
- X4 Pharmaceuticals, Inc. shareholders
- Schedule 13G/A · Bain Capital Life Sciences Fund, L.P. · Feb 17, 2026
- Schedule 13D · Bain Capital Life Sciences Fund, L.P. · Aug 13, 2025
- Form 4 · Craig Adam R · Oct 19, 2026
- Schedule 13G/A · FMR LLC · Oct 7, 2026
- Form 4 · Kirske David · Oct 5, 2026
- Schedule 13G · Venrock Healthcare Capital Partners III, L.P. · Sep 21, 2026
- Schedule 13G/A · Deep Track Capital, LP · Aug 14, 2026