Mark Tsai in

Mark Tsai

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Regional Sales Director-West at Legend Biotech
📍 Los Angeles Metropolitan Area, United States

Mark is a top-performing sales leader in the oncology sector with extensive experience in start-ups and successful drug launches. As the Regional Sales Director for the West at Legend Biotech, he manages a large team. He holds an MBA from Pepperdine Graziadio Business School and a B.S. from UC Irvine.

Beyond his professional achievements, Mark demonstrates a strong commitment to patient advocacy. He actively volunteers his personal time on weekends to support patient-focused events, collaborating with organizations like the International Myeloma Foundation alongside colleagues from various departments.

He was recognized as #1 in the Nation with the "Hall of Legends Award" in 2023 at Legend Biotech.

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Experience
28 Years
Current Role
Regional Sales Director-West
Location
Los Angeles Metropolitan Area, United States
Personality Overview

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Communication Style
Decision Approach
Work Preference

Behavioral traits and communication patterns that shape how this person evaluates opportunities, builds trust, and makes decisions in professional settings.

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Priorities

Topics Mark cares about

Oncology Sales
He has a consistent track record as a top performer, winning multiple Circle of Excellence and Hall of Legends awards for sales volume at two different oncology companies.
Team Leadership
Currently leads a team of nine specialists across twelve states and is actively hiring. He has previous national experience as a Field Sales Trainer.
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Career

Work history

11-2025
Regional Sales Director-West
Legend Biotech
9-2025 - 12-2025
Executive Cell Therapy Account Specialist
Legend Biotech
8-2021 - 12-2025
Sr. Cell Therapy Account Specialist
Legend Biotech
1-2020 - 7-2021
Field Sales Trainer- National
Puma Biotechnology, Inc.
7-2017 - 7-2021
Sr. Clinical Oncology Specialist
Puma Biotechnology, Inc.
In the press

Media appearances

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Education
1990 - 1995
Bachelor of Science (BS)
UC Irvine
1999 - 2001
Master of Business Administration (MBA)
Pepperdine Graziadio Business School
Social presence
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Behavioral profile

DISC profile (public)

DISC behavioral profile

Dominance, influence, steadiness, and calculativeness scores with guidance on how this person prefers to communicate and decide.

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