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X4 Pharmaceuticals Employee Directory

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.

Find X4 Pharmaceuticals employees' phone numbers or email addresses

X4 Pharmaceuticals Global Highlights

Location
Employees

North America
88

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  • United States Of America
    88

Europe
8

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  • Austria
    3
  • United Kingdom Of Great Britain And Northern Ireland
    1
  • Belgium
    1
  • Germany
    1
  • Romania
    1
  • Italy
    1

Asia
1

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  • India
    1

X4 Pharmaceuticals's Leadership

  • Chief Medical Officer at X4 Pharmaceuticals
    L. K.
    Chief Medical Officer
    Mobile Phone
  • Chief Marketing Officer at X4 Pharmaceuticals
    S. P.
    Chief Marketing Officer
    Mobile Phone
  • Executive Chairman at X4 Pharmaceuticals
    A. C.
    Executive Chairman
    Mobile Phone
  • Director, Drug Substance at X4 Pharmaceuticals
    A. K.
    Director, Drug Substance
    Mobile Phone
  • Controller, Senior Director Finance at X4 Pharmaceuticals
    R. S.
    Controller, Senior Director Finance
    Mobile Phone
  • Senior Clinical Data Manager at X4 Pharmaceuticals
    E. C.
    Senior Clinical Data Manager
    Mobile Phone
  • Contracts Manager at X4 Pharmaceuticals
    K. M.
    Contracts Manager
    Mobile Phone
  • Msl at X4 Pharmaceuticals
    L. N.
    Msl
    Mobile Phone

X4 Pharmaceuticals Employee Metrics

100%
50%
0%
2026
2025
  • Operations
  • Quality Assurance
  • Research
  • Engineering
  • Program & Project Management
  • Other
  • Biotechnology
  • Community & Social Services
  • Legal
  • Entrepreneurship
  • Sales
  • Pharmaceuticals
  • Accounting

Contact profiles from X4 Pharmaceuticals

Name
Title
Contact
Location
Last Update
  • Executive Chairman at X4 Pharmaceuticals
    A. C.
    Executive Chairman
    Mobile Phone
    United Kingdom
    Jun 28, 2026
  • Chief Medical Officer at X4 Pharmaceuticals
    L. K.
    Chief Medical Officer
    Mobile Phone
    Oct 17, 2024
  • Chief Marketing Officer at X4 Pharmaceuticals
    S. P.
    Chief Marketing Officer
    Mobile Phone
    Oct 18, 2024
  • Director, Drug Substance at X4 Pharmaceuticals
    A. K.
    Director, Drug Substance
    Mobile Phone
    Nov 04, 2024
  • Controller, Senior Director Finance at X4 Pharmaceuticals
    R. S.
    Controller, Senior Director Finance
    Mobile Phone
    Oct 22, 2024
  • Senior Clinical Data Manager at X4 Pharmaceuticals
    E. C.
    Senior Clinical Data Manager
    Mobile Phone
    Oct 21, 2024
  • Contracts Manager at X4 Pharmaceuticals
    K. M.
    Contracts Manager
    Mobile Phone
    Oct 16, 2024
  • Msl at X4 Pharmaceuticals
    L. N.
    Msl
    Mobile Phone
    Oct 21, 2024
  • Executive Assistant at X4 Pharmaceuticals
    R. S. L.
    Executive Assistant
    Mobile Phone
    Oct 16, 2024
  • Principal Medical Science Liaison Covering Eu (r&d - Medical Affairs - Eu) at X4 Pharmaceuticals
    M. S.
    Principal Medical Science Liaison Covering Eu (r&d - Medical Affairs - Eu)
    Mobile Phone
    Germany, Baden-Württemberg
    Jun 27, 2026

Frequently Asked Questions

What is X4 Pharmaceuticals known for?

Minus sign iconPlus sign iconX4 Pharmaceuticals was founded in 2014 and operates in the Biotechnology Research industry. You can contact X4 Pharmaceuticals's main corporate office by phone at
+1-857-529-****
. Explore X4 Pharmaceuticals's company overview page for more information.

What is X4 Pharmaceuticals's most common email format?

Minus sign iconPlus sign iconX4 Pharmaceuticals employees' email format typically follows the pattern of First.Last@x4pharma.com. Trying to find reliable and up-to-date employee contact data? Find more X4 Pharmaceuticals email formats with LeadIQ.

How many employees does X4 Pharmaceuticals have currently?

Minus sign iconPlus sign iconX4 Pharmaceuticals has approximately 78 employees as of August 2026. These team members are located across 3 continents, including North America, Europe and Asia.

Who are X4 Pharmaceuticals's key employees and leadership?

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As of August 2026, X4 Pharmaceuticals's key employees include:

  • Chief Medical Officer: L. K.
  • Chief Marketing Officer: S. P.
  • Executive Chairman: A. C.
  • Director, Drug Substance: A. K.
  • Controller, Senior Director Finance: R. S.

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