X4 Pharmaceuticals, Inc. · NASDAQ:XFOR
BCLS II Equity Opportunities, LP reported a 7.43% stake in X4 Pharmaceuticals, Inc. (Schedule 13G/A)
Event Dec 31, 2025 · Filed Feb 17, 2026
BCLS II Equity Opportunities, LP reported a 7.43% stake in X4 Pharmaceuticals, Inc., 7,047,216 shares, as a passive investor on Dec 31, 2025. Filed Feb 17, 2026 (Schedule 13G/A).
- Stake
- 7.43%
- Shares
- 7,047,216
- Intent
- Passive
- What changed
- Stake changed
- Filed together
- 6 holders
The filing in full
| Holder | Stake | Shares |
|---|---|---|
| Bain Capital Life Sciences Fund, L.P. | 0% | 0 |
| Bain Capital Life Sciences Fund II, L.P. | 0.07% | 64,190 |
| BCIP Life Sciences Associates, LP | 0.01% | 7,817 |
| BCLS II Investco, LP | 0.80% | 758,598 |
| BCLS I Investco, LP | 0.09% | 89,633 |
| BCLS II Equity Opportunities, LP | 7.43% | 7,047,216 |
Source
Related
- X4 Pharmaceuticals, Inc.
- Bain Capital Life Sciences Fund, L.P.
- X4 Pharmaceuticals, Inc. shareholders
- Schedule 13G · Bain Capital Life Sciences Fund, L.P. · Sep 15, 2025
- 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