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X4 Pharmaceuticals SEC Filings

NASDAQ: XFORHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD

2.91+0.12 (+4.30%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

X4 Pharmaceuticals filing overview

This page lists 60 recent SEC filings by X4 Pharmaceuticals (XFOR), including 15 4, 13 SCHEDULE 13G, 11 SCHEDULE 13G/A, 9 8-K. The latest annual report (10-K) was filed on Mar 17, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 6, 2026.

The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Oct 8, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.

Summary generated from market data by MetaCap's automated system. Methodology

XFOR SEC filings

X4 Pharmaceuticals SEC filings
FiledFormDescriptionDocument
Oct 8, 20268-KEntry into a Material Definitive Agreement; Termination of a Material Definitive Agreement; Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement; Unregistered Sales of Equity Securities; Regulation FD DisclosureView on EDGAR
Oct 7, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Sep 21, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Sep 9, 20268-KOther EventsView on EDGAR
Sep 8, 20268-KOther EventsView on EDGAR
Aug 14, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Aug 14, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Aug 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Aug 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Aug 6, 202610-QQuarterly reportView on EDGAR
Jul 30, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Jul 1, 20268-KDeparture or Appointment of Directors or Officers; Compensatory Arrangements; Regulation FD DisclosureView on EDGAR
Jul 1, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 1, 20264Statement of changes in beneficial ownershipView on EDGAR
May 15, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
May 13, 20264Statement of changes in beneficial ownershipView on EDGAR
May 13, 20268-K/AAmended: Departure or Appointment of Directors or Officers; Compensatory Arrangements; Submission of Matters to a Vote of Security HoldersView on EDGAR
May 12, 20268-KDeparture or Appointment of Directors or Officers; Compensatory Arrangements; Submission of Matters to a Vote of Security HoldersView on EDGAR
May 6, 202610-QQuarterly reportView on EDGAR
Mar 20, 2026DEF 14ADefinitive proxy statementView on EDGAR
Mar 17, 202610-KAnnual reportView on EDGAR
Mar 6, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Feb 17, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Feb 17, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Feb 17, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Feb 17, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Feb 13, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Feb 12, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Feb 5, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Jan 15, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Jan 7, 20264Statement of changes in beneficial ownershipView on EDGAR
Jan 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Jan 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Jan 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Nov 14, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Nov 7, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Nov 5, 20258-KResults of Operations and Financial ConditionView on EDGAR
Nov 5, 202510-QQuarterly reportView on EDGAR
Nov 3, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Oct 31, 20254Statement of changes in beneficial ownershipView on EDGAR
Oct 31, 20254Statement of changes in beneficial ownershipView on EDGAR
Oct 31, 20254Statement of changes in beneficial ownershipView on EDGAR
Oct 29, 2025SCHEDULE 13D/ABeneficial ownership report (activist) (amendment)View on EDGAR
Oct 27, 20258-KEntry into a Material Definitive AgreementView on EDGAR
Oct 27, 20254Statement of changes in beneficial ownershipView on EDGAR
Oct 24, 2025424B5ProspectusView on EDGAR
Oct 23, 2025424B5ProspectusView on EDGAR
Oct 21, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Oct 3, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Sep 18, 2025424B3ProspectusView on EDGAR
Sep 17, 20258-KCosts Associated with Exit or Disposal Activities; Departure or Appointment of Directors or Officers; Compensatory Arrangements; Regulation FD DisclosureView on EDGAR
Sep 15, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Aug 25, 20258-KDeparture or Appointment of Directors or Officers; Compensatory ArrangementsView on EDGAR
Aug 20, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Aug 19, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Aug 18, 2025SCHEDULE 13DBeneficial ownership report (activist)View on EDGAR
Aug 18, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Aug 15, 2025SCHEDULE 13D/ABeneficial ownership report (activist) (amendment)View on EDGAR
Aug 14, 20254Statement of changes in beneficial ownershipView on EDGAR

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