Day One Biopharmaceuticals Employee Directory

Day One Biopharmaceuticals Global Highlights

Location

Employees

North America

225

• United States Of America
  225

Europe

2

• Serbia
  1
• Switzerland
  1

Africa

1

• Benin
  1

Day One Biopharmaceuticals's Leadership

• 
  J. Y.

  Chief Of Staff & Head Of Pmo

  Mobile Phone

  Email
• 
  A. J.

  Head Of Information Technology

  Mobile Phone

  Email
• 
  S. H.

  Executive Assistant To Chief Development Officer

  Mobile Phone

  Email
• 
  R. S.

  Vice President, Talent

  Mobile Phone

  Email
• 
  P. R.

  Director, Commercial Insights

  Mobile Phone

  Email
• 
  D. D. C.

  Medical Director

  Mobile Phone

  Email
• 
  S. M.

  Sr Director Regulatory Operations

  Mobile Phone

  Email
• 
  C. D.

  Director Biostatistics Programming

  Mobile Phone

  Email

Day One Biopharmaceuticals Employee Metrics

• Customer Success
• Operations
• Marketing
• Finance
• Accounting
• Other
• Engineering
• Research
• Sales
• Legal
• Biotechnology
• Program & Project Management
• Administrative
• Healthcare Services
• Pharmaceuticals

Sales is the largest department at 23% of profiles with a known department, up from 1% in July 2025, followed by Legal (12%, up from 4%) and Biotechnology (10%, up from 0%).

Contact profiles from Day One Biopharmaceuticals

• 
  R. S.

  Vice President, Talent

  Mobile Phone

  Email

  Bay

  Sep 24, 2026
• 
  J. Y.

  Chief Of Staff & Head Of Pmo

  Mobile Phone

  Email

  Bay

  Jul 14, 2026
• 
  A. J.

  Head Of Information Technology

  Mobile Phone

  Email

  Sep 24, 2026
• 
  P. R.

  Director, Commercial Insights

  Mobile Phone

  Email

  Bay

  Oct 25, 2026
• 
  D. D. C.

  Medical Director

  Mobile Phone

  Email

  Bay

  Jul 14, 2026
• 
  S. M.

  Sr Director Regulatory Operations

  Mobile Phone

  Email

  Bay

  Sep 21, 2026
• 
  C. D.

  Director Biostatistics Programming

  Mobile Phone

  Email

  Bay

  Oct 05, 2026
• 
  D. D.

  Director Of Sec Reporting & Technical Accounting

  Mobile Phone

  Email

  Aug 09, 2026
• 
  A. B.

  Director Of Development Operations

  Mobile Phone

  Email

  Sep 19, 2026
• 
  I. M. H.

  Director, Medical Communications

  Mobile Phone

  Email

  Oct 21, 2024

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Frequently Asked Questions

What are the largest departments at Day One Biopharmaceuticals?

Sales is the largest department at 23% of profiles with a known department, up from 1% in July 2025, followed by Legal (12%, up from 4%) and Biotechnology (10%, up from 0%). Day One Biopharmaceuticals's workforce spans 19 departments.

How has Day One Biopharmaceuticals's workforce changed over the past year?

Day One Biopharmaceuticals's workforce grew 2% between July 2025 and July 2026. Sales's share of profiles with a known department rose from 1% to 23%.

How many employees does Day One Biopharmaceuticals have currently?

Day One Biopharmaceuticals has approximately 232 employees as of October 2026. These team members are located across 3 continents, including North America, Europe and Africa.

Who are Day One Biopharmaceuticals's key employees and leadership?

As of October 2026, Day One Biopharmaceuticals's key employees include:

• Chief Of Staff & Head Of Pmo: J. Y.
• Head Of Information Technology: A. J.
• Executive Assistant To Chief Development Officer: S. H.
• Vice President, Talent: R. S.
• Director, Commercial Insights: P. R.

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What is Day One Biopharmaceuticals's most common email format?

Day One Biopharmaceuticals employees' email format typically follows the pattern of First.Last@dayonebio.com. Trying to find reliable and up-to-date employee contact data? Find more Day One Biopharmaceuticals email formats with LeadIQ.

What is Day One Biopharmaceuticals known for?

Day One Biopharmaceuticals was founded in 2018 and operates in the Biotechnology Research industry. Explore Day One Biopharmaceuticals's company overview page for more information.