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Alan Ezekowitz

Board director at AI3 Bio, Inc.

DirectorPublic companyRoles at 2 startups
Updated Nov 9, 2026·Latest SEC filing Nov 4, 2026·Suggest an edit

About Alan Ezekowitz

Alan Ezekowitz is a board director at AI3 Bio, Inc., which is developing lipid nanoparticle and antibody therapies that target the T cells involved in autoimmune disease.

Earlier in his career, Ezekowitz was president and chief executive officer of Abide Therapeutics, Inc. from 2011 to 2019. He co-founded the company, which developed a treatment for movement and mood disorders before Lundbeck acquired it in 2019. He was senior vice president and franchise head at Merck from 2006 to 2011. From 1995 to 2005, he was the Charles Wilder Professor of Pediatrics at Harvard Medical School. During that time, he also served as chief of pediatric services at Massachusetts General Hospital for Children and Partners HealthCare System. He has served as a director of Fulcrum Therapeutics, Inc. since 2016. He previously served on the Partners HealthCare Board.

Experience

This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Alan Ezekowitz in the role, so the role may have started earlier or lasted longer.

AI3 Bio, Inc. Current
Board Director
2024 – Present · Watertown, MA
ai3Bio develops lipid nanoparticle and antibody drugs that remove the T cells driving autoimmune disease, for patients living with these conditions.
Fulcrum Therapeutics, Inc. Current
Director
2016 – Present · Public company (FULC)
Septerna, Inc.
Director
2023 – 2026 · Public company (SEPN)
Organon & Co.
Director
2021 – 2026 · Public company (OGN)
Abide Therapeutics, Inc.
president and chief executive officer
2011 – 2019
Merck
senior vice president and franchise head for disease areas including bone, respiratory, immunology, muscle, dermatology and urology
2006 – 2011
Harvard Medical School
Charles Wilder Professor of Pediatrics
1995 – 2005
Massachusetts General Hospital for Children and Partners Healthcare System
chief of pediatric services
1995 – 2005
Partners HealthCare
Board member

Key Colleagues at Startups

The people Alan Ezekowitz works with at each company, as listed on that company's latest Form D.

AI3 Bio, Inc. · Form D, Nov 4, 2026
Steven Altschuler
Steven Altschuler
CEO, Board Director
ML
Michael Lyman
Executive officer
NS
Nick Seaver
CFO/CBO, Board Director
Jonathan Kagan
Jonathan Kagan
Distinguished Scientist
Septerna, Inc. · Form D, Jul 13, 2023
RX
Ran Xiao
Executive officer
EB
Elizabeth Bhatt
Executive officer
JT
Jeffrey Tong
Director
JS
Jake Simson
Director
AB
JF
Jeffrey Finer
Chief Executive Officer and director
SS
Samira Shaikhly
Executive officer

Alan Ezekowitz in the News

  • ·The Pharma Letterai3Bio

Sources

  1. SECAI3 Bio, Inc. Form D, filed Nov 4, 2026
  2. SECSepterna, Inc. Form D, filed Jul 13, 2023
  3. SECForms 3, 4 and 5 filed by Alan Ezekowitz (SEC filer 1780209)
  4. P2About | ai3Bio
  5. P5Fulcrum Therapeutics, Inc. S-1/A