# X4 Pharmaceuticals, Inc: Form SCHEDULE 13D/A, filed Oct 29, 2025

- Company: [X4 Pharmaceuticals, Inc](/companies/xfor.md) (CIK 1501697)
- Form: SCHEDULE 13D/A
- Filed: 2025-10-29
- Accepted by EDGAR: Oct 29, 2025, 18:04 ET
- Period: not reported
- Accession: 0001072613-25-000747
- Inline XBRL: no
- Main document: https://www.sec.gov/Archives/edgar/data/1501697/000107261325000747/xslSCHEDULE_13D_X01/primary_doc.xml
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/1501697/000107261325000747/

## Sections

Sections are extracted only from 10-K and 10-Q reports. Read this filing’s documents on sec.gov. https://www.sec.gov/Archives/edgar/data/1501697/000107261325000747/xslSCHEDULE_13D_X01/primary_doc.xml

Filed Oct 29, 2025.
Source: SEC EDGAR, the filing index for accession 0001072613-25-000747. Last ingested by Listed: Nov 4, 2026, 16:53 ET. No prices; not investment advice.