---
schema_version: "secwatch.filing_event.v1"
accession: "0001501697-25-000032"
form_type: "8-K"
ticker: "XFOR"
cik: "0001501697"
company_name: "X4 Pharmaceuticals, Inc"
filed_at: "2025-10-27T23:59:59+00:00"
generated_at: "2026-05-17T02:10:04.463229+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# X4 Pharmaceuticals raises ~$145.6M in public offering of common stock and warrants

## Summary
- Offering of 45.86M shares at $2.90/share and pre-funded warrants for 700K shares at $2.899/share.
- Underwriters' option for additional 6.984M shares exercised in full.
- Net proceeds expected ~$145.6M after discounts and expenses; closing October 27, 2025.
- Offered under effective shelf registration (333-273961); Leerink, Stifel, Guggenheim as representatives.

## SEC filing metadata
- accession: 0001501697-25-000032
- form_type: 8-K
- ticker: XFOR
- cik: 0001501697
- company_name: X4 Pharmaceuticals, Inc
- filed_at: 2025-10-27T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1501697/000150169725000032/0001501697-25-000032-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1501697/000150169725000032/xfor-20251023.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001501697-25-000032
- JSON: https://secwatch.observer/filing/0001501697-25-000032.json
- Plain text: https://secwatch.observer/filing/0001501697-25-000032.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.