Insights

Rare disease focus X4 Pharmaceuticals is a commercial-stage biopharma specializing in rare immune disorders with FDA-approved XOLREMDI (mavorixafor) for US use, presenting a target for specialty pharmacy channels, patient access programs, and payer negotiations.

CXCR4 antagonist The company’s lead asset mavorixafor targets CXCR4 and is in pivotal Phase 3 for chronic neutropenia, signaling opportunities to engage hematology and immunology care teams, transplant centers, and hematology-oncology networks seeking novel supportive care therapies.

Commercial and clinical expansion Recent board additions and ongoing expansion of commercial and clinical capabilities indicate readiness for broader market penetration, regional partnerships, and global clinical trial collaborations to accelerate adoption.

Financial and investor activity With funding levels at substantial scale and ongoing investor engagement (conferences and investor events), there is potential to align BD efforts with strategic financing milestones, co-development discussions, and potential M&A or collaboration opportunities.

Market and events footprint Active participation in major hematology and biotech conferences and events creates opportunities for targeted outreach to key opinion leaders, clinical researchers, and payer stakeholders ahead of data milestones and regulatory filings.

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X4 Pharmaceuticals Tech Stack

X4 Pharmaceuticals uses 8 technology products and services including Google Ads, Microsoft Advertising, Tableau, and more. Explore X4 Pharmaceuticals's tech stack below.

Media & News

X4 Pharmaceuticals's Email Address Formats

X4 Pharmaceuticals uses at least 1 email format:
X4 Pharmaceuticals Email FormatsExamplePercentage
First.Last@x4pharma.comJohn.Doe@x4pharma.com
100%

Frequently Asked Questions

What is X4 Pharmaceuticals's phone number?

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You can contact X4 Pharmaceuticals's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is X4 Pharmaceuticals's stock symbol?

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X4 Pharmaceuticals is a publicly traded company; the company's stock symbol is XFOR.

What is X4 Pharmaceuticals's official website and social media links?

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X4 Pharmaceuticals's official website is x4pharma.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does X4 Pharmaceuticals generate?

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As of August 2026, X4 Pharmaceuticals's annual revenue is estimated to be $25M - $50M.

What is X4 Pharmaceuticals's SIC code and NAICS code?

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X4 Pharmaceuticals's SIC code is 8731 - Commercial Physical and Biological Research and NAICS code is 541714 - Research and Development in Biotechnology (except Nanobiotechnology).

How many employees does X4 Pharmaceuticals have currently?

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As of August 2026, X4 Pharmaceuticals has approximately 78 employees across 3 continents, including North America, Europe and Asia. Key team members include Chief Medical Officer: L. K., Chief Marketing Officer: S. P. and Executive Chairman: A. C. Explore X4 Pharmaceuticals's employee directory with LeadIQ.

What industry does X4 Pharmaceuticals belong to?

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X4 Pharmaceuticals operates in the Biotechnology Research industry.

What technology does X4 Pharmaceuticals use?

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X4 Pharmaceuticals's tech stack includes Google Ads, Microsoft Advertising, Tableau, Microsoft SharePoint, NetSuite, ADP, DocuSign and WP Engine.

What is X4 Pharmaceuticals's email format?

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X4 Pharmaceuticals's email format typically follows the pattern of First.Last@x4pharma.com. Find more X4 Pharmaceuticals email formats with LeadIQ.

How much funding has X4 Pharmaceuticals raised to date?

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As of August 2026, X4 Pharmaceuticals has raised $783M in funding. The last funding round occurred on Oct 24, 2025 for $155M.

When was X4 Pharmaceuticals founded?

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X4 Pharmaceuticals was founded in 2014.
X4 Pharmaceuticals logo

X4 Pharmaceuticals

Biotechnology ResearchMassachusetts, United States51-200 Employees

X4 Pharmaceuticals is a Boston-based biotechnology company focused on rare immune disorders. It operates as a fully integrated, commercial-stage organization that has brought XOLREMDI (mavorixafor) to the U.S. market for its first approved indication. The company is pursuing additional indications for mavorixafor and is conducting a global pivotal Phase 3 trial in chronic neutropenia.

Its target market includes patients with rare hematologic or immune conditions and the clinicians who treat them, with a focus on meeting previously unmet therapeutic needs. The firm positions itself within the biotechnology industry as a specialized, commercially operating entity with ongoing development programs. In 2026, X4 Pharmaceuticals participated in the Jefferies Global Healthcare Conference.

Section iconCompany Overview

Phone number
SIC Code
8731 - Commercial Physical and Biological Research
Stock Symbol
XFOR
NAICS Code
541714 - Research and Development in Biotechnology (except Nanobiotechnology)
Founded
2014
Employees
51-200

Section iconFunding & Financials

  • $783M

    X4 Pharmaceuticals has raised a total of $783M of funding over 15 rounds. Their latest funding round was raised on Oct 24, 2025 in the amount of $155M as a Post IPO Equity.

  • $25M - $50M

    X4 Pharmaceuticals's revenue is estimated to be in the range of $25M - $50M

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